def get_services(self):
        """
        get_services makes call to services end point of api.embed.ly to fetch
        the list of supported providers and their regexes
        """

        if self.services:
            return self.services

        url = 'http://api.embed.ly/1/services/python'

        http = httplib2.Http(timeout=self.timeout)
        headers = {'User-Agent': self.user_agent,
                   'Connection': 'close'}
        resp, content = http.request(url, headers=headers)

        if resp['status'] == '200':
            resp_data = json.loads(content.decode('utf-8'))
            self.services = resp_data

            # build the regex that we can use later
            _regex = []
            for each in self.services:
                _regex.append('|'.join(each.get('regex', [])))

            self._regex = re.compile('|'.join(_regex))

        return self.services
get_services makes call to services end point of api.embed.ly to fetch
        the list of supported providers and their regexes