Update travis file to run php 7

Author: rtconner

.travis.yml

@@ -3,6 +3,7 @@ language: php
 php: 
   - 5.5
   - 5.6
+  - 7.0
   - hhvm
 
 before_script:

src/Taggable.php

@@ -1,4 +1,6 @@
-<?php namespace Conner\Tagging;
+<?php
+
+namespace Conner\Tagging;
 
 use Conner\Tagging\Contracts\TaggingUtility;
 use Conner\Tagging\Events\TagAdded;