Rails 2.3 Plugin Routes
As noted here http://guides.rubyonrails.org/2_3_release_notes.html and here http://rails.lighthouseapp.com/projects/8994/tickets/329-add-an-api-for-plugins-to-register-routes, Rails 2.3 will load routes from a plugin. If the plugin is considered an engine. A blank “app” directory in your plugin’s root is enough for the plugin loader.
