Add a .travis.yml conf

Author: padraic

.travis.yml

@@ -0,0 +1,24 @@
+language: php
+
+php:
+  - 7.0
+  - 5.6
+  - 5.5
+  - 5.4
+  - hhvm
+  - hhvm-nightly
+
+matrix:
+    allow_failures:
+        - php: 7.0
+        - php: hhvm
+        - php: hhvm-nightly
+
+before_install:
+    - composer self-update
+
+before_script:
+    - travis_retry composer install --no-interaction --prefer-source
+
+script:
+    - vendor/bin/phpunit --coverage-text