language: node_js
node_js:
  - 4
  - 5
  - 6
cache:
  yarn: true
  directories:
    - node_modules
after_success:
  - npm run coveralls

language: node_js
node_js:
  - 6
  - 7
  - 8
cache:
  yarn: true
  directories:
    - node_modules
after_success:
  - npm run coveralls

Change tested version from 4-6 to 6-8 since Babel dropped support
Change tested version from 4-6 to 6-8 since Babel dropped support
