Fix Travis CI

Author: sangnguyenplus

.travis.yml

@@ -14,7 +14,7 @@ before_script:
 - travis_retry composer update ${COMPOSER_FLAGS} --no-interaction --prefer-source
 
 script:
-- phpunit
+- ./vendor/bin/phpunit --coverage-text --coverage-clover=coverage.clover
 
 after_script:
 - php vendor/bin/ocular code-coverage:upload --format=php-clover coverage.clover