Travis file modified

Author: biscolab

.travis.yml

@@ -1 +1,18 @@
-language: php
+language: php
+
+php:
+  - 5.5
+  - 5.6
+  - 7
+  - 7.1
+
+before_script:
+  - travis_retry composer self-update
+  - travis_retry composer install --prefer-source --no-interaction
+
+script: phpunit
+
+matrix:
+  allow_failures:
+    - php: hhvm
+fast_finish: true