Removed php 5.4 due the new requirements

Author: terox

.travis.yml

@@ -2,7 +2,6 @@ language: php
 sudo: false
 
 php:
-  - 5.4
   - 5.5
   - 5.6
   - 7.0
@@ -16,7 +15,6 @@ matrix:
   fast_finish: true
   allow_failures:
     - php: hhvm
-    - php: 7.0
 
 before_install:
   - composer selfupdate