language: node_js
sudo: false
node_js:
  - "4"
  - "5"

language: node_js
sudo: false
node_js:
  - "4"
  - "5"
  - "6"

Revert "Remove Node 6 from Travis build"
Revert "Remove Node 6 from Travis build"

This reverts commit 450d2b26998fd010d68573e4feedf4f9766fd688.

We now have a workaround in place for the issues we've been seeing with
Node 6 and Jest.
