using correct build command in travis

Author: dcarbone

.travis.yml

@@ -17,7 +17,7 @@ install:
   - composer install --no-interaction --no-dev --no-progress --no-suggest --optimize-autoloader
 
 script:
-  - if [[ $BUILD_PHAR == 'true' && $TRAVIS_TAG != '' ]]; then /usr/bin/env php ./bin/php-cs phpcs:build -vvv ; fi
+  - if [[ $BUILD_PHAR == 'true' && $TRAVIS_TAG != '' ]]; then composer run-script build -vvv ; fi
 
 deploy:
   provider: releases