config.rb

# Activate and configure extensions
# https://middlemanapp.com/advanced/configuration/#configuring-extensions

activate :autoprefixer do |prefix|
  prefix.browsers = "last 2 versions"
end

activate :livereload 
activate :directory_indexes

# Per-page layout changes
page '/*.xml', layout: false
page '/*.json', layout: false
page '/*.txt', layout: false