language: node_js
node_js:
  - "4.0"
  - "iojs"
  - "0.12"
  - "0.10"

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

Update Travis CI tests: Add most-recent & v6 node & drop iojs, v0.12, v0.10
Update Travis CI tests: Add most-recent & v6 node & drop iojs, v0.12, v0.10
