Merge pull request #1166 from nikolas/patch-1

enable travis testing on node.js 5.1 and 4.2

Author: Lauren McCarthy

.travis.yml

@@ -2,6 +2,8 @@ language: node_js
 node_js:
   - "0.10"
   - "0.12"
+  - "4.2"
+  - "5.1"
 install: npm install
 script: npm run grunt
-sudo: false
+sudo: false