Only run 5.3 on precise, and the rest on trusty

Author: aiham

.travis.yml

@@ -1,12 +1,14 @@
 dist: trusty
 sudo: required
 language: php
-php:
-- '5.6'
-- '5.5'
-- '5.4'
-- '5.3'
-- 'hhvm'
+matrix:
+  include:
+  - php: 5.3
+    dist: precise
+  - php: 5.4
+  - php: 5.5
+  - php: 5.6
+  - php: hhvm
 before_script:
 - travis_retry composer install
 script: