chore(travis): Set up

Author: vonglasow

.travis.yml

@@ -2,28 +2,14 @@ language: php
 
 matrix:
   include:
-    - php: 5.5
-    - php: 5.6
-    - php: 7.0
-    - php: 7.1
-      env:
-        - ENABLE_XDEBUG=true
     - php: 7.1
+    - php: 7.2
+    - php: 7.2
       env:
         - ENABLE_DEVTOOLS=true
     - php: nightly
-    - php: hhvm-3.12
-      sudo: required
-      dist: trusty
-      group: edge
-    - php: hhvm
-      sudo: required
-      dist: trusty
-      group: edge
   allow_failures:
     - php: nightly
-    - php: hhvm-3.12
-    - php: hhvm
   fast_finish: true
 
 os: