Added clover report generation to Travis config.

Author: guillermo.fisher

.travis.yml

@@ -15,7 +15,7 @@ install:
   - composer install --no-interaction --prefer-source
 
 script:
-  - ./vendor/bin/phing build
+  - ./vendor/bin/phpunit --coverage-clover=coverage.clover
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar