Fix travis configuration

Author: enumag

.travis.yml

@@ -11,12 +11,16 @@ php:
     - hhvm-3.12
     - hhvm-nightly
 
+matrix:
+    allow_failures:
+        - php: hhvm-3.12
+        - php: hhvm-nightly
+
 before_install:
-    - echo $TRAVIS_PHP_VERSION
     - travis_retry composer self-update
 
 install:
-    - export PATH="$PATH:$HOME/.composer/vendor/bin"
+    - export PATH="$PATH:$HOME/.config/composer/vendor/bin"
     - travis_retry composer global require friendsofphp/php-cs-fixer "^2.0.0@dev"
     - travis_retry composer global require satooshi/php-coveralls "^1.0.0"
     - travis_retry composer update --no-interaction --prefer-source