fix .travis

Author: cheprasov

.travis.yml

@@ -49,5 +49,5 @@ before_install:
    - docker ps;
    - sleep 5;
 
-before_script
+before_script:
    - if [[ $TRAVIS_PHP_VERSION = 'hhvm' ]] ; then rm ./tests/Unit/Client/AbstractRedisClientIsolatedTest.php; fi;