Update to latest master of Ember and Handlebars

Per #17 with this PR, you can run the integration tests against the latest ember master and handlebars RC4. The first 4 fail because of:
```
Source: 	
TypeError: Cannot call method 'lookup' of undefined
    at Em.View.reopen._createGestureManager (ember-touch/system/view_ext:33:62)
    at Em.View.reopen.init (ember-touch/system/view_ext:19:10)
    at superWrapper [as init] (ember:1051:16)
    at new Class (ember:10995:15)
    at Function.Mixin.create.create (ember:11293:12)
    at Object.numStart (ember-touch/~tests/acceptance_tests/multiple_gestures:30:22)
    at Object.Test.run (http://localhost:9292/tests/qunit/qunit-1.11.0.js:190:18)
    at http://localhost:9292/tests/qunit/qunit-1.11.0.js:348:10
    at process (http://localhost:9292/tests/qunit/qunit-1.11.0.js:1420:24)
    at http://localhost:9292/tests/qunit/qunit-1.11.0.js:466:5
```