docs: def text(self, text, status=200, headers=None):
          '''
          Respond with given status and text content
  
          :type text: str
          :param text: text to return
  
          :type status: int
          :param status: status code to return
  
          :type headers: dict
          :param headers: dictionary of headers to add to response
  
          :returns: itself
          :rtype: Rule
          '''
          self.response = _Response(status, headers, text.encode('utf8'))
          return self