Sample of Rails config/application.rb

application.rb

require File.expand_path('../boot', __FILE__)

require 'rails/all'
require 'rails_autolink'     #THIS IS THE PLACE YOU NEED TO ADD

if defined?(Bundler)
  # If you precompile assets before deploying to production, use this line
  Bundler.require(*Rails.groups(:assets => %w(development test)))
  # If you want your assets lazily compiled in production, use this line
  # Bundler.require(:default, :assets, Rails.env)
end

module YOUR_RAILS_APP_NAME
  class Application < Rails::Application

  # .. ... ...
  # .. Other stuffs goes here ...
  # .. ... ...

  end
end