language: node_js
node_js:
  - '5'
  - '4'
  - '0.12'
  - '0.10'
before_install:
  - npm i -g npm
after_success: npm run coveralls

language: node_js
node_js:
  - '6'
  - '5'
  - '4'
  - '0.12'
  - '0.10'
before_install:
  - npm i -g npm
after_success: npm run coveralls

Add Node.js 6 to Travis file
Add Node.js 6 to Travis file