old_contents: urls = [
  	{ '/' 		: 'BaseController.hello' },
  	{'/<name>' 	: 'BaseController.greet'},
  	{'/rest'	: 'RestfulController'}
  ]
new_contents: urls = {
      '/'         : 'BaseController.hello',
      '/<name>'   : 'BaseController.greet',
      '/rest'     : 'RestfulController',
  
      # optional restful routing with
      # 'POST /rest' : 'RestfulController',
  
      # route filters
      # '/' : [
      #   'BaseController.validate', # run this before the following
      #   'BaseController.greet' # and before  the following
      #   'BaseController.say_goodbye'
      # ]
  
      # route grouping
      # '/api' : {
      #     '/auth' : {
      #         '/me' : [
      #
      #             'BaseController'
      #         ]
      #     }
      # }
  }
subject: add route grouping samples to implement