Test against PHP5.5, PHP5.6, PHP7, & HHVM

Author: WyriHaximus

.travis.yml

@@ -1,8 +1,20 @@
 language: php
 php:
-  - 5.4
   - 5.3
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7
   - hhvm
+  - hhvm-nightly
+
+matrix:
+  allow_failures:
+    - php: 7
+    - php: hhvm
+    - php: hhvm-nightly
+  fast_finish: true
+
 before_script:
   - composer install --dev --prefer-source --no-interaction
 script: