language: node_js
node_js:
  - "stable"
  - "6"
  - "4"
cache:
  directories:
    - node_modules
before_install:
- npm prune
- npm update

language: node_js
node_js:
  - "stable"
  - "6"
cache:
  directories:
    - node_modules
before_install:
- npm prune
- npm update

Remove Node.js 4 from Travis
Remove Node.js 4 from Travis
