Merge pull request #44 from laravel-notification-channels/test-on-php-7.2

Test the package on PHP 7.2 too

Author: Lloople

.travis.yml

@@ -3,6 +3,7 @@ language: php
 php:
   - 7.0
   - 7.1
+  - 7.2
 
 env:
   matrix:

composer.json

@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": ">=5.6.4",
+        "php": ">=7.0.0",
         "berkayk/onesignal-laravel": "^0.9.3",
         "illuminate/notifications": "5.*",
         "illuminate/support": "5.*"