language: node_js
node_js:
    - "0.10"
    - "0.12"
    - iojs
sudo: false
script: "npm test"

language: node_js
node_js:
    - 5
    - 4
    - "0.12"
    - iojs
sudo: false
script: "npm test"

Add build for node v4 and v5
Build: Add build for node v4 and v5