Add code coverage (#7)

.scrutinizer.yml

@@ -17,3 +17,5 @@ checks:
         fix_identation_4spaces: true
         fix_doc_comments: true
 
+tools:
+    external_code_coverage: true

.travis.yml

@@ -3,6 +3,7 @@ language: php
 php:
   - 5.6
   - 7.0
+  - 7.1
 
 env:
   matrix:
@@ -17,4 +18,5 @@ script:
   - phpunit --coverage-text --coverage-clover=coverage.clover
 
 after_script:
-  - php vendor/bin/ocular code-coverage:upload --format=php-clover coverage.clover
+  - wget https://scrutinizer-ci.com/ocular.phar
+  - php ocular.phar code-coverage:upload --format=php-clover coverage.clover

README.md

@@ -6,6 +6,7 @@
 [![StyleCI](https://styleci.io/repos/65379321/shield)](https://styleci.io/repos/65379321)
 [![SensioLabsInsight](https://img.shields.io/sensiolabs/i/9015691f-130d-4fca-8710-72a010abc684.svg?style=flat-square)](https://insight.sensiolabs.com/projects/9015691f-130d-4fca-8710-72a010abc684)
 [![Quality Score](https://img.shields.io/scrutinizer/g/laravel-notification-channels/onesignal.svg?style=flat-square)](https://scrutinizer-ci.com/g/laravel-notification-channels/onesignal)
+[![Code Coverage](https://img.shields.io/scrutinizer/coverage/g/laravel-notification-channels/onesignal/master.svg?style=flat-square)](https://scrutinizer-ci.com/g/laravel-notification-channels/onesignal/?branch=master)
 [![Total Downloads](https://img.shields.io/packagist/dt/laravel-notification-channels/onesignal.svg?style=flat-square)](https://packagist.org/packages/laravel-notification-channels/onesignal)
 
 This package makes it easy to send [OneSignal notifications](https://documentation.onesignal.com/docs) with Laravel 5.3.
@@ -141,7 +142,7 @@ OneSignalMessage::create()
 Please see [CHANGELOG](CHANGELOG.md) for more information what has changed recently.
 
 ## Testing
-    
+
 ``` bash
 $ composer test
 ```