code: function update(cb) {
    return function (name, configFile, args) {
      function resultCb(result) {
        console.log(text.__('Job %s was updated successfully'), name);
      }
      function jenkinsCb(jenkins) {
        var config = fs.readFileSync(configFile).toString();
        jenkins.updateJob(name, config, cli.exitCb(null, resultCb));
      }
      cb(args, jenkinsCb);
    };
  }
docs: Get a handler that calls Jenkins API to update a job with specific configuration.
  Success job update message will be logged when there's no error.
  
  @param {Function} cb: callback for argument handling
  @return Jenkins API handler function