Merge pull request #12 from clue-labs/travis

Lock Travis distro so new future defaults will not break the build

Author: clue

.travis.yml

@@ -1,12 +1,22 @@
 language: php
 
 php:
-  - 5.3
+# - 5.3 # requires old distro, see below
   - 5.4
   - 5.5
   - 5.6
   - 7
-  - hhvm
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  allow_failures:
+    - php: hhvm
 
 install:
   - composer install --no-interaction