Merge pull request CoderKungfu#18 from simkimsia/patch-2

Update BeanstalkSampleQueue.php

Author: miccheng

demo/queues/BeanstalkSampleQueue.php

@@ -19,15 +19,15 @@ public function __construct()
                         );
     }
 
-    public function addJob(array $newJob)
+    public function addJob($newJob = null)
     {
         $formatted_data = array('worker'=>$this->queueWorker, 'data'=>$newJob);
         $this->dataSource->add($formatted_data);
 
         return true;
     }
 
-    public function getJob()
+    public function getJob($jobId = null)
     {
         $data = $this->dataSource->get();
         $nextJob = new \PHPQueue\Job($data, $this->dataSource->last_job_id);