While developing Rails apps, it is often difficult to remember which prefixes route to which controller#action. That is why it is useful to run `rails routes` and put that output in a file for later reference. This gem does that for you. After installing the gem in your Rails project, it is listening for saved changes in your `config/routes.rb`. Every time you make a change to routes.rb and you save it, restful_routing will look for `restful_routing.rb` in your root directory. It will update it if there or make it if not. `restful_routing.rb` will contain the output of `rails routes`.