Try fix Travis CI problem by disabling xdebug

Author: pitbulk

.travis.yml

@@ -10,6 +10,9 @@ before_install:
  - curl -s https://getcomposer.org/installer | php
  - php composer.phar install --prefer-source --no-interaction
 
+before_script:
+  - phpenv config-rm xdebug.ini
+
 script:
   - phpunit --bootstrap tests/bootstrap.php --configuration tests/phpunit.xml
   - php vendor/bin/phpcpd --exclude tests --exclude vendor .