language: node_js
node_js:
  - iojs
  - 0.11
  - 0.12
  - 5
  - 6
  - 7
  - 8
env:
  - NODE_ENV=travis

language: node_js
node_js:
  - 6
  - 8
  - 9
  - 10
env:
  - NODE_ENV=travis

Support only node 9 and LTS versions.
Support only node 9 and LTS versions.
