language: node_js
node_js:
  - "4.1.x"
  - "4.2.x"
  - "4.3.x"
  - "4.4.x"
  - "6.0.x"
  - "6.0.x"
  - "6.1.x"

language: node_js
node_js:
  - "4.0.0"
  - "4.1.0"
  - "4.2.0"
  - "4.3.0"
  - "4.4.0"
  - "6.0.0"
  - "6.1.0"

Correct node version formats for Travis CI
Correct node version formats for Travis CI