add documentation to generated routes

Mention that in addition to `rake routes` a developer can also visit `/rails/info/routes` in the browser.

guides/code/getting_started/config/routes.rb

@@ -55,7 +55,8 @@
   # just remember to delete public/index.html.
   root :to => "welcome#index"
 
-  # See how all your routes lay out with "rake routes"
+  # See how all your routes lay out by running `$ rake routes`
+  # or by visiting `/rails/info/routes` in your browser
 
   # This is a legacy wild controller route that's not recommended for RESTful applications.
   # Note: This route will make all actions in every controller accessible via GET requests.

railties/lib/rails/generators/rails/app/templates/config/routes.rb

@@ -51,5 +51,6 @@
   #   end
 
 
-  # See how all your routes lay out with "rake routes".
+  # See how all your routes lay out by running `$ rake routes`
+  # or by visiting `/rails/info/routes` in your browser
 end