Travis improvements

Author: GrahamCampbell

.travis.yml

@@ -5,7 +5,7 @@ php:
   - 5.4
   - 5.5
   - 5.6
-  - hhvm
+  - hhvm-nightly
 
 before_script:
     - cp tests/acceptance.conf.php.default tests/acceptance.conf.php
@@ -20,5 +20,6 @@ script:
 
 matrix:
   allow_failures:
-    - php: hhvm
+    - php: 5.6
+    - php: hhvm-nightly
   fast_finish: true