Add podspec.

Update podspec.

Swifternalization.podspec

@@ -0,0 +1,21 @@
+Pod::Spec.new do |s|
+
+  s.name         = "Swifternalization"
+  s.version      = "1.0.2"
+  s.summary      = "Library that helps in localizing apps. It is written in Swift."
+
+  s.homepage     = "https://github.com/tomkowz/Swifternalization"
+
+  s.license      = { :type => 'MIT', :file => 'LICENSE' }
+
+  s.author             = { "Tomasz Szulc" => "szulctomasz@me.com" }
+  s.social_media_url = "http://twitter.com/tomkowz"
+
+  s.platform     = :ios, '8.0'
+
+  s.source       = { :git => "https://github.com/tomkowz/Swifternalization.git", :tag => "v1.0.2" }
+
+  s.source_files  = 'Classes', 'Swifternalization/**/*.{swift,h}'
+  s.requires_arc = true
+
+end