Change coverage format

Author: m1guelpf

.travis.yml

@@ -21,8 +21,8 @@ before_script:
   - php artisan migrate
 
 script:
-  - phpunit --coverage-text --coverage-clover=coverage.clover
+  - phpunit --coverage-text --coverage-clover=coverage.xml
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar
-  - php ocular.phar code-coverage:upload --format=php-clover coverage.clover
+  - php ocular.phar code-coverage:upload --format=php-clover coverage.xml