sudo: required
language: node_js
node_js:
  - "4.1"
  - "4.0"
  - "0.12"
  - "0.11"
  - "0.10"
  - "0.8"
  - "0.6"
  - "iojs"
before_install:
  - "curl -L http://git.io/ejPSng | /bin/sh"
services:
  - mongodb

sudo: required
language: node_js
node_js:
  - "4.1"
  - "4.0"
  - "0.12"
  - "0.11"
  - "0.10"
  - "iojs"
before_install:
  - "curl -L http://git.io/ejPSng | /bin/sh"
services:
  - mongodb

Remove Node.js version 0.6 & 0.8
Remove Node.js version 0.6 & 0.8

because Travis CI build errors:

"The command "curl -L http://git.io/ejPSng | /bin/sh" failed and exited with 1 during ."