Add blueprints for "ember-cli-mocha >= 0.12.0"

[Turbo87]

[email protected] introduced a new testing API and deprecated the old describeXXX() helpers. The blueprints in this repository need to be updated to reflect those changes.

Instead of just updating we should make sure that uses with all versions of ember-cli-mocha get the right blueprints. We can accomplish that by checking the installed version of ember-cli-mocha using a VersionChecker and then deciding whether to use the mocha-files or mocha-0.12-files blueprints folder.

The tracking issue for this is ember-cli/ember-cli-mocha#142

[rwjblue]

Sounds like a good plan to me...

[Turbo87]

@rwjblue can we target the beta branch with this change?

[rwjblue]

Assuming it lands within the next couple weeks, yes. But you would target master branch with a commit prefixed by [BUGFIX beta].

[cs3b]

what about acceptance tests? shouldn't we add template for >= 0.12.0 ?

https://github.com/emberjs/ember.js/tree/master/blueprints/acceptance-test

[rwjblue]

@cs3b - In general, commenting on a previously closed issue is going to be missed. Please open a new issue with an explanation of the issue you are seeing...