Update .travis.yml

Author: MekDrop

.travis.yml

@@ -1,12 +1,32 @@
 language: php
 
 php:
+  - 5.0
+    dist: precise
+  - 5.1
+    dist: precise
   - 5.3
+    dist: precise
   - 5.4
+    dist: precise
   - 5.5
   - 5.6
   - 7.0
+  - 7.1
+  - 7.2
+  - hhvm-3.3
+    dist: trusty
+  - hhvm-3.6
+    dist: trusty
+  - hhvm-3.9
+    dist: trusty
+  - hhvm-3.12
+    dist: trusty
+  - hhvm-3.15
+    dist: trusty
+  - hhvm-3.24
+    dist: trusty
 
 script: |
   composer install --optimize-autoloader --no-suggest --no-dev
-  phpunit
+  phpunit