Fix travis

Use PHPUnit from vendor

Author: mathmarques

Diff for: .travis.yml

@@ -14,8 +14,8 @@ before_script:
   - if [[ "$TRAVIS_PHP_VERSION" != '5.6' ]]; then composer install -n ; fi
 
 script:
-  - if [[ "$TRAVIS_PHP_VERSION" == '5.6' ]]; then phpunit --coverage-clover clover.xml ; fi
-  - if [[ "$TRAVIS_PHP_VERSION" != '5.6' ]]; then phpunit ; fi
+  - if [[ "$TRAVIS_PHP_VERSION" == '5.6' ]]; then vendor/bin/phpunit --coverage-clover clover.xml ; fi
+  - if [[ "$TRAVIS_PHP_VERSION" != '5.6' ]]; then vendor/bin/phpunit ; fi
   - if [[ "$TRAVIS_PHP_VERSION" == '5.6' ]]; then vendor/bin/phpcs ; fi
 
 after_script: