ember-qunit to 2.1.2

[mrkirchner]

Can we get a bump of ember-qunit? There is a fix in 2.1.1 for ember engines.

[rwjblue]

As you can see from https://github.com/ember-cli/ember-cli-qunit/blob/master/package.json#L37, we already allow 2.1.1. If you are using yarn do yarn upgrade (or yarn upgrade ember-qunit), if you are using npm do rm -rf node_modules && npm install.

I don't think any changes are required here...

[mrkirchner]

Thank you