Let's just ignore these HHVM warnings for now

amacneil · amacneil · commit df7dc499c94b · 2013-12-20T18:55:13.000+11:00
diff --git a/.travis.yml b/.travis.yml
@@ -20,3 +20,7 @@ before_script:
   - composer install -n --dev --prefer-source
 
 script: vendor/bin/phpcs --standard=PSR2 src && vendor/bin/phpunit --coverage-text
+
+matrix:
+  allow_failures:
+    - hhvm
