code: function(url, callback) {
        if (!url) return callback('send(): url is empty.');
        console.log('send(): ' + url);
        request.get(url, function(err, res, body) {
          console.log(body);
  	if (err) return callback(err);
          body = JSON.parse(body);
          if (body && body.query) {
            return callback('', body);
          } else {
            return callback('send(): No results returned.');
          }
        });
      }
docs: /*
  Do request to *url*, e.g.,
  http://lotr.huiji.wiki/api.php?action=query&prop=extracts&exlimit=