Adjusted coveralls binary path

Author: Toflar

.travis.yml

@@ -26,4 +26,4 @@ script:
   - php vendor/bin/phpunit $COVERAGE
 
 after_script:
- - if [[ $COVERAGE ]]; then php vendor/bin/coveralls; fi
+ - if [[ $COVERAGE ]]; then php vendor/bin/php-coveralls; fi