Merge pull request #100 from GrahamCampbell/patch-1

Tweaked travis config

Author: Alexandre Salomé

.travis.yml

@@ -7,10 +7,10 @@ php:
     - 5.4
     - 5.5
     - 5.6
-    - 7
+    - 7.0
     - hhvm
 
-script: phpunit
+install:
+    - composer install --prefer-source
 
-before_script:
-    - composer install --dev --prefer-source
+script: phpunit