hhvm still does not want to work (#349)

don't care enough to fix it, lets not claim we support it anymore. if somebody wants to make it work again, please do so. probably a problem with running hhvm as web server on travis

Author: dbu

.travis.yml

@@ -4,7 +4,6 @@ language: php
 
 php:
   - 5.6
-# broken with puli discovery  - hhvm
   - 7.0
   - 7.1
 

README.md

@@ -32,7 +32,6 @@ Features
   or easily implement your own caching proxy client.
 * [Test your application](http://foshttpcache.readthedocs.io/en/stable/testing-your-application.html)
   against your Varnish or NGINX setup.
-* This library is fully compatible with [HHVM](http://www.hhvm.com).
 
 Documentation
 -------------