diff --git a/.circleci/config.yml b/.circleci/config.yml
index 13b8850..56e5bb2 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,7 +29,7 @@ jobs:
       - run:
           name: install dependencies
           command: |
-            gem install bundler
+            gem install bundler -v '~> 1.17'
             bundle install --jobs=4 --retry=3 --path vendor/bundle
 
       # - save_cache:
diff --git a/.gitignore b/.gitignore
index de5eb49..1ebeaba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 .rspec_status
 
 *.gem
+Gemfile.lock
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 0493fbb..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,38 +0,0 @@
-PATH
-  remote: .
-  specs:
-    git_switch (0.3.2)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    diff-lcs (1.3)
-    rake (10.5.0)
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-core (3.8.0)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.0)
-    rspec_junit_formatter (0.4.1)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  bundler (~> 1.16)
-  git_switch!
-  rake (~> 10.0)
-  rspec (~> 3.0)
-  rspec_junit_formatter (~> 0.4.1)
-
-BUNDLED WITH
-   1.16.2
diff --git a/README.md b/README.md
index ab09579..f9f25ca 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,9 @@ $ rvm @global do gem install git_switch
 
 ## Configuration
 
-Although a guided setup is planned, for now you must manually create your configuration at `~/.gitswitch`. The config file is in YAML format. Here is an example.
+To run the guided setup, use `git switch --config`.
+
+You may also manually create or edit your configuration at `~/.gitswitch`. The config file is in YAML format. Here is an example.
 
 ```
 personal:
@@ -42,7 +44,7 @@ The root keys can be any nickname you want. It should be memorable to make it ea
 
 ## Usage
 
-Git Switch follows the convention to create a custom git command. It can be invoked as follows, to either set your git profile locally or globally:
+Git Switch follows the convention to create a custom git command. It can be invoked as follows, to either set your git profile locally (no flag) or globally (`-g`):
 
 ```
 $ git switch personal
diff --git a/git_switch.gemspec b/git_switch.gemspec
index 8cf490f..1bb146b 100644
--- a/git_switch.gemspec
+++ b/git_switch.gemspec
@@ -6,6 +6,7 @@ require "git_switch/version"
 Gem::Specification.new do |spec|
   spec.name          = "git_switch"
   spec.version       = GitSwitch::VERSION
+  spec.platform      = Gem::Platform::RUBY
   spec.authors       = ["Randall Reed, Jr."]
   spec.email         = ["randallreedjr@gmail.com"]
 
@@ -27,7 +28,9 @@ Gem::Specification.new do |spec|
   spec.executables   << 'git-switch'
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_runtime_dependency "activesupport", "~> 5.2"
+
+  spec.add_development_dependency "bundler", "~> 1.17"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
   spec.add_development_dependency "rspec_junit_formatter", "~> 0.4.1"
diff --git a/lib/git_switch/config.rb b/lib/git_switch/config.rb
index 9504849..8d6196b 100644
--- a/lib/git_switch/config.rb
+++ b/lib/git_switch/config.rb
@@ -42,6 +42,63 @@ def valid_profile?
       end
     end
 
+    def configure!
+      @profiles = build_profiles
+      write_profiles_to_config_file if @profiles.any?
+    end
+
+    def build_profiles
+      puts "How many profiles would you like to create?"
+      profile_count = STDIN.gets.chomp.to_i
+      profiles = Array.new(profile_count, {})
+      current = 1
+      profiles.map do |profile|
+        puts "\n#{ordinal(current)} profile name (e.g. 'work' or 'personal'):"
+        profile[:profile_name] = STDIN.gets.chomp
+        puts "Git username for #{profile[:profile_name]}:"
+        profile[:git_username] = STDIN.gets.chomp
+        puts "Git email for #{profile[:profile_name]}:"
+        profile[:git_email] = STDIN.gets.chomp
+        puts "Git name for #{profile[:profile_name]}:"
+        profile[:git_name] = STDIN.gets.chomp
+        puts "Path to ssh key for #{profile[:profile_name]} (e.g. '~/.ssh/id_rsa'):"
+        profile[:ssh_key] = STDIN.gets.chomp
+
+        current +=1
+        profile.dup
+      end
+    rescue Interrupt
+      return {}
+    end
+
+    def ordinal(number)
+      # Source: https://github.com/infertux/ordinalize_full
+      abs_number = number.abs
+      suffix = if (11..13).cover?(abs_number % 100)
+        "th"
+      else
+        case abs_number % 10
+        when 1 then "st"
+        when 2 then "nd"
+        when 3 then "rd"
+        else "th"
+        end
+      end
+      "#{abs_number}#{suffix}"
+    end
+
+    def write_profiles_to_config_file
+      File.open(File.expand_path('~/.gitswitch'), 'w') do |file|
+        profiles.each do |profile|
+          file.write "#{profile[:profile_name]}:\n"
+          file.write "  username: #{profile[:git_username]}\n"
+          file.write "  email: #{profile[:git_email]}\n"
+          file.write "  name: #{profile[:git_name]}\n"
+          file.write "  ssh: #{profile[:ssh_key]}\n"
+        end
+      end
+    end
+
     def print_list
       profiles = @profiles.map do |key, value|
         prefix = value["username"] == current_git_username ? "=>" : "  "
diff --git a/lib/git_switch/options.rb b/lib/git_switch/options.rb
index 6d832c3..c56e338 100644
--- a/lib/git_switch/options.rb
+++ b/lib/git_switch/options.rb
@@ -7,16 +7,19 @@ def initialize(args)
 
     def flags
       @flags ||= args.select do |arg|
-        arg.match(/\A\-[glv]{1}\z/) ||
-          arg.match(/\A\-\-(global|list|verbose){1}\z/)
+        arg.match(/\A\-[cglv]{1}\z/) ||
+          arg.match(/\A\-\-(config|global|list|verbose){1}\z/)
       end
     end
 
     def valid_args?
-      if list? && args.count > 1
-        puts "Invalid args"
-        return false
-      elsif no_flags?(args) || one_flag?(args)
+      if config_flag? && args.count == 1
+        return true
+      elsif list_flag? && args.count == 1
+        return true
+      elsif no_flags?
+        return true
+      elsif one_flag? && !flag_only?
         return true
       elsif usage?
         return true
@@ -30,8 +33,12 @@ def usage?
       args.count == 0
     end
 
+    def config?
+      config_flag? && args.count == 1
+    end
+
     def list?
-      (flags.include? '-l') || (flags.include? '--list')
+      list_flag? && args.count == 1
     end
 
     def global?
@@ -44,14 +51,26 @@ def verbose?
 
     private
 
-    def no_flags?(args)
+    def list_flag?
+      (flags.include? '-l') || (flags.include? '--list')
+    end
+
+    def config_flag?
+      (flags.include? '-c') || (flags.include? '--config')
+    end
+
+    def no_flags?
       args.length == 1 && flag_count(args) == 0
     end
 
-    def one_flag?(args)
+    def one_flag?
       args.length == 2 && flag_count(args) == 1
     end
 
+    def flag_only?
+      list_flag? || config_flag?
+    end
+
     def flag_count(args)
       args.count {|a| a.start_with? '-'}
     end
diff --git a/lib/git_switch/switcher.rb b/lib/git_switch/switcher.rb
index 31e87ae..cf5a921 100644
--- a/lib/git_switch/switcher.rb
+++ b/lib/git_switch/switcher.rb
@@ -1,8 +1,11 @@
 require_relative './version'
+require 'active_support/core_ext/module/delegation'
 
 module GitSwitch
   class Switcher
     attr_reader :config, :options
+    delegate :usage?, :config?, :list?, :global?, to: :options
+    delegate :profile, :name, :username, :email, :ssh, :print_list, :configure!, :valid_profile?, to: :config
 
     def initialize(args)
       raise ArgumentError unless args.is_a? Array
@@ -11,8 +14,11 @@ def initialize(args)
     end
 
     def run
+      return unless options.valid_args?
       if usage?
         print_usage
+      elsif config?
+        configure!
       elsif list?
         print_list
       else
@@ -20,38 +26,6 @@ def run
       end
     end
 
-    def profile
-      config.profile
-    end
-
-    def name
-      config.name
-    end
-
-    def username
-      config.username
-    end
-
-    def email
-      config.email
-    end
-
-    def ssh
-      config.ssh
-    end
-
-    def usage?
-      options.usage?
-    end
-
-    def list?
-      options.list?
-    end
-
-    def global?
-      options.global?
-    end
-
     def git_repo?
       if GitHelper.git_repo? || global?
         return true
@@ -61,13 +35,8 @@ def git_repo?
       end
     end
 
-    def valid_profile?
-      config.valid_profile?
-    end
-
     def set!
-      return unless options.valid_args? && valid_profile?
-      return unless git_repo?
+      return unless valid_profile? && git_repo?
 
       flag = global? ? '--global' : ''
 
@@ -80,10 +49,6 @@ def print_usage
       puts usage
     end
 
-    def print_list
-      config.print_list
-    end
-
     def print_settings(flag = '')
       if options.verbose?
         puts "\nGit Config:"
@@ -110,9 +75,12 @@ def set_ssh
 
     def usage
       <<~USAGE
-      usage: git switch [-l | --list]
+      usage: git switch [-l | --list] [-c | --config]
                         <profile> [-v | --verbose] [-g | --global]
 
+      configure profiles
+          git switch -c
+
       switch to a profile for local development only
           git switch <profile>
 
diff --git a/lib/git_switch/version.rb b/lib/git_switch/version.rb
index 3963e8b..26ac620 100644
--- a/lib/git_switch/version.rb
+++ b/lib/git_switch/version.rb
@@ -1,3 +1,3 @@
 module GitSwitch
-  VERSION = "0.3.2"
+  VERSION = "0.4.0"
 end
diff --git a/spec/lib/git_switch/config_spec.rb b/spec/lib/git_switch/config_spec.rb
index f60e46a..c204775 100644
--- a/spec/lib/git_switch/config_spec.rb
+++ b/spec/lib/git_switch/config_spec.rb
@@ -22,6 +22,111 @@
     end
   end
 
+  describe 'configure!' do
+    let(:profile_count) { '2' }
+    let(:profile_name_1) { 'work2' }
+    let(:git_username_1) { 'johnsmith2' }
+    let(:git_email_1) { 'john@defmethod2.io' }
+    let(:git_name_1) { 'John Smith Jr' }
+    let(:ssh_key_path_1) { '~/.ssh/defmethod2_rsa' }
+
+    let(:profile_name_2) { 'personal2' }
+    let(:git_username_2) { 'johnnyfive2' }
+    let(:git_email_2) { 'me@johnsmith2.com' }
+    let(:git_name_2) { 'Johnny Smith Jr' }
+    let(:ssh_key_path_2) { '~/.ssh/id2_rsa' }
+
+    before :each do
+      allow(File).to receive(:expand_path).and_return(File.expand_path('spec/fixtures/.empty'))
+      @config = GitSwitch::Config.new(['-c'])
+
+      io_obj = double
+      expect(STDIN)
+        .to receive(:gets)
+        .and_return(io_obj)
+        .exactly(11).times
+      expect(io_obj).to receive(:chomp).and_return(profile_count)
+      expect(io_obj).to receive(:chomp).and_return(profile_name_1)
+      expect(io_obj).to receive(:chomp).and_return(git_username_1)
+      expect(io_obj).to receive(:chomp).and_return(git_email_1)
+      expect(io_obj).to receive(:chomp).and_return(git_name_1)
+      expect(io_obj).to receive(:chomp).and_return(ssh_key_path_1)
+
+      expect(io_obj).to receive(:chomp).and_return(profile_name_2)
+      expect(io_obj).to receive(:chomp).and_return(git_username_2)
+      expect(io_obj).to receive(:chomp).and_return(git_email_2)
+      expect(io_obj).to receive(:chomp).and_return(git_name_2)
+      expect(io_obj).to receive(:chomp).and_return(ssh_key_path_2)
+
+      expect(@config).to receive(:puts).with('How many profiles would you like to create?')
+      expect(@config).to receive(:puts).with("\n1st profile name (e.g. 'work' or 'personal'):")
+      expect(@config).to receive(:puts).with('Git username for work2:')
+      expect(@config).to receive(:puts).with('Git email for work2:')
+      expect(@config).to receive(:puts).with('Git name for work2:')
+      expect(@config).to receive(:puts).with('Path to ssh key for work2 (e.g. \'~/.ssh/id_rsa\'):')
+
+      expect(@config).to receive(:puts).with("\n2nd profile name (e.g. 'work' or 'personal'):")
+      expect(@config).to receive(:puts).with('Git username for personal2:')
+      expect(@config).to receive(:puts).with('Git email for personal2:')
+      expect(@config).to receive(:puts).with('Git name for personal2:')
+      expect(@config).to receive(:puts).with('Path to ssh key for personal2 (e.g. \'~/.ssh/id_rsa\'):')
+    end
+
+    it 'creates the .gitswitch config file' do
+      allow(@config).to receive(:write_profiles_to_config_file)
+      @config.configure!
+      expect(@config.profiles).to eq [
+        { :profile_name=>"work2",
+          :git_username=>"johnsmith2",
+          :git_email=>"john@defmethod2.io",
+          :git_name=>"John Smith Jr",
+          :ssh_key=>"~/.ssh/defmethod2_rsa" },
+        { :profile_name=>"personal2",
+          :git_username=>"johnnyfive2",
+          :git_email=>"me@johnsmith2.com",
+          :git_name=>"Johnny Smith Jr",
+          :ssh_key=>"~/.ssh/id2_rsa" }
+      ]
+    end
+
+    it 'writes the config to the file' do
+      expect(File).to receive(:open).with(File.expand_path('~/.gitswitch'), 'w')
+      @config.configure!
+    end
+  end
+
+  describe 'ordinal' do
+    let(:config) { GitSwitch::Config.new(['-c']) }
+
+    it 'returns the correct value for 1' do
+      expect(config.ordinal(1)).to eq '1st'
+    end
+
+    it 'returns the correct value for 2' do
+      expect(config.ordinal(2)).to eq '2nd'
+    end
+
+    it 'returns the correct value for 3' do
+      expect(config.ordinal(3)).to eq '3rd'
+    end
+
+    it 'returns the correct value for 4' do
+      expect(config.ordinal(4)).to eq '4th'
+    end
+
+    it 'returns the correct value for 10' do
+      expect(config.ordinal(10)).to eq '10th'
+    end
+
+    it 'returns the correct value for 11' do
+      expect(config.ordinal(11)).to eq '11th'
+    end
+
+    it 'returns the correct value for 13' do
+      expect(config.ordinal(13)).to eq '13th'
+    end
+  end
+
   describe '#print_list' do
     let(:config) { GitSwitch::Config.new(['-l']) }
     context 'when profiles have been configured' do
diff --git a/spec/lib/git_switch/options_spec.rb b/spec/lib/git_switch/options_spec.rb
index cd1e460..a41bc17 100644
--- a/spec/lib/git_switch/options_spec.rb
+++ b/spec/lib/git_switch/options_spec.rb
@@ -5,23 +5,30 @@
 
   describe 'flags' do
     context 'when short flags are used' do
+      context 'when run in config mode' do
+        let(:args) { ['-c'] }
+        it 'returns an array of the flags' do
+          expect(options.flags).to eq ['-c']
+        end
+      end
+
       context 'when run in list mode' do
         let(:args) { ['-l'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['-l']
         end
       end
 
       context 'when run in global mode' do
         let(:args) { ['personal', '-g'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['-g']
         end
       end
 
       context 'when run with multiple flags' do
         let(:args) { ['personal', '-g', '-v'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['-g', '-v']
         end
       end
@@ -35,23 +42,30 @@
     end
 
     context 'when long flags are used' do
+      context 'when run in config mode' do
+        let(:args) { ['--config'] }
+        it 'returns an array of the flags' do
+          expect(options.flags).to eq ['--config']
+        end
+      end
+
       context 'when run in list mode' do
         let(:args) { ['--list'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['--list']
         end
       end
 
       context 'when run in global mode' do
         let(:args) { ['personal', '--global'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['--global']
         end
       end
 
       context 'when run with multiple flags' do
         let(:args) { ['personal', '--global', '--verbose'] }
-        it 'returns an empty array' do
+        it 'returns an array of the flags' do
           expect(options.flags).to eq ['--global', '--verbose']
         end
       end
@@ -103,6 +117,22 @@
       end
     end
 
+    context 'when run with list flag' do
+      let(:args) { ['-l'] }
+
+      it 'returns true' do
+        expect(options.valid_args?).to be true
+      end
+    end
+
+    context 'when run with config flag' do
+      let(:args) { ['-c'] }
+
+      it 'returns true' do
+        expect(options.valid_args?).to be true
+      end
+    end
+
     context 'when run with multiple flags' do
       let(:args) { ['personal','-g','-l'] }
       let(:options) { GitSwitch::Options.new(args) }
@@ -160,6 +190,36 @@
     end
   end
 
+  describe 'config?' do
+    context 'when args includes -c' do
+      let(:args) { ['-c'] }
+      it 'returns true' do
+        expect(options.config?).to be true
+      end
+    end
+
+    context 'when args includes --config' do
+      let(:args) { ['--config'] }
+      it 'returns true' do
+        expect(options.config?).to be true
+      end
+    end
+
+    context 'when there are multiple args' do
+      let(:args) { ['-c', 'foo'] }
+      it 'returns false' do
+        expect(options.config?).to be false
+      end
+    end
+
+    context 'when args do not include -c or --config' do
+      let(:args) { [] }
+      it 'returns false' do
+        expect(options.config?).to be false
+      end
+    end
+  end
+
   describe 'list?' do
     context 'when args includes -l' do
       let(:args) { ['-l'] }
@@ -175,6 +235,13 @@
       end
     end
 
+    context 'when there are multiple args' do
+      let(:args) { ['-l', 'foo'] }
+      it 'returns false' do
+        expect(options.list?).to be false
+      end
+    end
+
     context 'when args do not include -l or --list' do
       let(:args) { [] }
       it 'returns false' do
diff --git a/spec/lib/git_switch/switcher_spec.rb b/spec/lib/git_switch/switcher_spec.rb
index 2f60a28..c473b3e 100644
--- a/spec/lib/git_switch/switcher_spec.rb
+++ b/spec/lib/git_switch/switcher_spec.rb
@@ -53,45 +53,89 @@
     end
   end
 
+  describe '#config?' do
+    context 'when -c is passed as only argument' do
+      it 'returns true' do
+        expect(GitSwitch::Switcher.new(['-c']).config?).to be true
+      end
+    end
+
+    context 'when -c is passed as first argument' do
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['-c','foo']).config?).to be false
+      end
+    end
+
+    context 'when -c is passed as second argument' do
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['foo','-c']).config?).to be false
+      end
+    end
+
+    context 'when --config is passed as only argument' do
+      it 'returns true' do
+        expect(GitSwitch::Switcher.new(['--config']).config?).to be true
+      end
+    end
+
+    context 'when --config is passsed as first argument' do
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['--config', 'foo']).config?).to be false
+      end
+    end
+
+    context 'when --config is passsed as second argument' do
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['foo','--config']).config?).to be false
+      end
+    end
+
+    context 'when no flag is passed' do
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['foo']).config?).to be false
+      end
+    end
+  end
+
   describe '#list?' do
     context 'when -l is passed as only argument' do
-      it 'sets to true' do
+      it 'returns true' do
         expect(GitSwitch::Switcher.new(['-l']).list?).to be true
       end
     end
 
     context 'when -l is passed as first argument' do
-      it 'sets to true' do
-        expect(GitSwitch::Switcher.new(['-l','foo']).list?).to be true
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['-l','foo']).list?).to be false
       end
     end
 
     context 'when -l is passed as second argument' do
-      it 'sets to true' do
-        expect(GitSwitch::Switcher.new(['foo','-l']).list?).to be true
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['foo','-l']).list?).to be false
       end
     end
 
     context 'when --list is passed as only argument' do
-      it 'sets to true' do
-        expect(GitSwitch::Switcher.new(['-l']).list?).to be true
+      it 'returns true' do
+        expect(GitSwitch::Switcher.new(['--list']).list?).to be true
       end
     end
 
     context 'when --list is passsed as first argument' do
-      it 'sets to true' do
-        expect(GitSwitch::Switcher.new(['--list']).list?).to be true
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['--list', 'foo']).list?).to be false
       end
     end
 
     context 'when --list is passsed as second argument' do
-      it 'sets to true' do
-        expect(GitSwitch::Switcher.new(['foo','--list']).list?).to be true
+      it 'returns false' do
+        expect(GitSwitch::Switcher.new(['foo','--list']).list?).to be false
       end
     end
 
     context 'when no flag is passed' do
-      it 'sets to false' do
+      it 'returns false' do
         expect(GitSwitch::Switcher.new(['foo']).list?).to be false
       end
     end
@@ -106,9 +150,19 @@
       end
     end
 
+    context 'in config mode' do
+      let(:switcher) { GitSwitch::Switcher.new(['-c']) }
+      it 'calls configure' do
+        expect(switcher).to receive(:configure!).and_call_original
+        expect(switcher.config).to receive(:configure!)
+        switcher.run
+      end
+    end
+
     context 'in list mode' do
       let(:switcher) { GitSwitch::Switcher.new(['-l']) }
       it 'calls print_list' do
+        expect(switcher).to receive(:print_list).and_call_original
         expect(switcher.config).to receive(:print_list)
         switcher.run
       end
@@ -215,9 +269,12 @@
     let(:switcher) { GitSwitch::Switcher.new([]) }
     let(:expected_output) do
       <<~USAGE
-      usage: git switch [-l | --list]
+      usage: git switch [-l | --list] [-c | --config]
                         <profile> [-v | --verbose] [-g | --global]
 
+      configure profiles
+          git switch -c
+
       switch to a profile for local development only
           git switch <profile>