fixed coveralls

Author: Kharhamel

.travis.yml

@@ -59,4 +59,4 @@ script:
 - cd generator/tests/rector/0.5 && composer install && composer rector && composer test && cd ../../../..
 
 after_script:
-- cd generator && travis_retry php vendor/bin/php-coveralls -v
+- cd generator && travis_retry php vendor/bin/php-coveralls -v --root_dir="./generator"