gistfile1.rb

# lib/tw_date_picker.rb
module TwDatePicker
  
  module TwDatePickerHelper
  end
  
  module AssetTagHelper
    def tw_date_picker_includes(options = {})
      javascript_include_tag('tw_date_picker', options)        
    end
  end
  
end

# environment.rb
ActionView::Base.send :include, TwDatePicker::AssetTagHelper
ActionView::Helpers::AssetTagHelper.send :include, TwDatePicker::AssetTagHelper