Merge pull request #35 from clue-labs/hhvm

Fix HHVM build for now again and ignore future HHVM build errors

Author: clue

.travis.yml

@@ -3,7 +3,14 @@ language: php
 php:
   - 5.3
   - 5.6
-  - hhvm
+
+# also test against HHVM, but require "trusty" and ignore errors
+matrix:
+  include:
+    - php: hhvm
+      dist: trusty
+  allow_failures:
+    - php: hhvm
 
 env:
   - LOGIN=username:password@localhost