Make the GET request.

def _get_response(self, **kwargs):
        """
        Make the GET request.
        """
        # pylint: disable=E1101
        url = self.read_url + "?output=JSON&token=%s" % self.read_token
        for key in kwargs:
            if key and kwargs[key]:
                val = kwargs[key]
                if isinstance(val, (list, tuple)):
                    val = ",".join(val)
                url += "&%s=%s" % (key, val)
        self._api_url = url
        req = urllib2.urlopen(url)
        data = simplejson.loads(req.read())
        self._api_raw_data = data
        if data and data.get('error', None):
            exceptions.BrightcoveError.raise_exception(
                data['error'])
        if data == None:
            raise exceptions.NoDataFoundError(
                "No data found for %s" % repr(kwargs))
        return data