language: node_js
node_js:
  - "0.12"
  - "0.11"
  - "0.10"
  - "iojs"
install:
  - npm install
script:
  - npm run check

language: node_js
node_js:
  - "0.12"
  - "0.10"
  - "iojs-2.0"
  - "4.0"
install:
  - npm install
script:
  - npm run check

Use node 4.0 for Travis tests. Remove unstable node version, add a stable one.
Use node 4.0 for Travis tests. Remove unstable node version, add a stable one.
