Support for Ember 1.11.0#28

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visoft wants to merge 2 commits intoryanto:masterfrom

Commits on Apr 6, 2015

Changed helper to work with both Ember 1.10 and 1.11
visoft
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Upgraded to Ember 1.11 with fix from https://github.com/emberjs/ember.js/issues/10310
visoft
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