Updated to add php 7.2 support

Author: thilanga

.travis.yml

@@ -2,7 +2,9 @@ sudo: required
 dist: trusty
 language: php
 php:
+  - "7.2"
   - "7.1"
+  - "7.0"
 
 services:
   - docker

tests/QueueTest.php

@@ -47,7 +47,7 @@ public function testQueueJobExpired()
 
         // Expect an attempted older job in the queue
         $job = Queue::pop('test');
-        $this->assertEquals(1, 0);// trying to get a fail test
+        $this->assertEquals(1, $job->attempts());
         $this->assertGreaterThan($expiry, $job->reservedAt());
 
         $job->delete();