Convenience method for requesting to google with proper cookies/params.

def get(self, url, parameters=None):
        """
        Convenience method for requesting to google with proper cookies/params.
        """
        if not self.access_token:
            raise IOError("No authorized client available.")
        if parameters is None:
            parameters = {}
        parameters.update({'access_token': self.access_token, 'alt': 'json'})
        request = requests.get(url + '?' + self.getParameters(parameters))
        if request.status_code != 200:
            return None
        else:
            return toUnicode(request.text)