Adding `DS` to jshint "predef"

prevent jshint warning an error when build process.
Merge pull request #209 from c0urg3tt3/patch-1

Adding `DS` to jshint "predef"
Changed Ember dependency for Emblem grunt task.
Merge pull request #211 from atsjj/master

Changed Ember dependency for Emblem grunt task.
Use grunt-load-config for config
fixed isPackageAvailable
improve example acceptance test
`bower install` after `npm install`
Merge pull request #217 from hjdivad/bower-install-in-postinstall

`bower install` after `npm install`
EAK-todos replaced by ember-app-kit-todos.
Merge pull request #220 from c0urg3tt3/patch-1

EAK-todos replaced by ember-app-kit-todos.
cleanup acceptance tests
Add `wait` and `keyEvent` test helpers to jshint predef
Fixed argument order when delegating to QUnit.equal in test_helper.
Merge pull request #229 from thhermansen/patch-1

Fixed argument order when delegating to QUnit.equal in test_helper.
Partial updates for scripts, templates and styles (Grunt pipeline bronze edition)
Merge pull request #228 from jkintscher/jshint-predef

Add `wait` and `keyEvent` test helpers to jshint predef
removing unused module
Merge pull request #233 from twokul/master

removing unused module
Add default assertion message for qunit `strictEqual`