language: node_js
node_js:
  - "node"
  - "6"
  - "5"

language: node_js
node_js:
  - "node"
  - "7"
  - "6"
  - "5"
  - "4"

Add node 4 and 7 to the list of supported versions
Add node 4 and 7 to the list of supported versions
