Get a job by id
@param {String} qName Queue name
@param {String} id Job id
@returns {Object} The job
function(qName, id) {
    var q = queue.get(qName);
    return q.getJob(id).then(function(job) {
      if (!job) {
        return job;
      }
      return job.getState().then(function(state) {
        job.state = state;
        return job;
      });
    });
  }