setup codesniffer and phpunit

Author: Dominik Tomasi

Diff for: .travis.yml

@@ -1,8 +1,17 @@
 language: php
+
 php:
     - "5.3"
     - "5.4"
     - "5.5"
     - "5.6"
 
-script: ant -keep-going
+sudo: false
+
+install:
+    - composer self-update
+    - composer install --prefer-source
+
+script:
+    - ./vendor/bin/phpcs --standard=PSR2 src/ tests/
+    - ./vendor/bin/phpunit