Merge pull request #18 from texthtml/mathroc-patch-3

update php versions travis.yml

Author: mathroc

.travis.yml

@@ -3,10 +3,9 @@ language: php
 sudo: false
 
 php:
-    - 5.5
     - 5.6
     - 7.0
-    - hhvm
+    - 7.1
 
 before_script:
     - composer install -n