Return the json dictionary containing rules for a subreddit.

        :param subreddit: The subreddit whose rules we will return.

def get_rules(self, subreddit, bottom=False):
        """Return the json dictionary containing rules for a subreddit.

        :param subreddit: The subreddit whose rules we will return.

        """
        url = self.config['rules'].format(subreddit=six.text_type(subreddit))
        return self.request_json(url)