Fixed before script for travis

.travis.yml

@@ -2,11 +2,6 @@ sudo: false
 language: node_js
 node_js:
   - "5"
-  - "5.1"
-  - "4"
-  - "4.2"
-  - "4.1"
-  - "4.0"
-  - "0.12"
 before_script:
   - npm install
+  - npm start