Create .travis.yml

.travis.yml

@@ -0,0 +1,18 @@
+language: php
+
+php:
+  - 7
+  - 5.6
+  - 5.5
+  - 5.4
+  - 5.3
+  - hhvm
+  - nightly
+  
+sudo: false
+
+install:
+  - travis_retry composer update --no-progress --prefer-dist --profile
+
+script:
+  - composer test