feat(ember): Ember 2

BREAKING CHANGE: Update addon to support Ember2

    Get rid of the two-way binding and use 'data down, actions up (DDAU)'.
    See: http://emberjs.com/blog/2015/06/12/ember-1-13-0-released.html#toc_ember-2-0-beta

    Usage Before:
    ```handlebars
    {{bs-datetimepicker date=mydate format='YYYY-MM-DD'}}
    ```

    Usage Now (> v1.0.0):
    ```handlebars
    {{bs-datetimepicker date=mydate format='YYYY-MM-DD' updateDate=(action (mut model.date2))}}
    ```

Also check this commit d965e85q

README.md

@@ -14,7 +14,7 @@ Generate blueprints
 ember generate ember-bootstrap-datetimepicker
 ```
 
-## Ember 2
+## BREAKING CHANGE for Ember 2
 There are some breaking-changes when using this addon > v0.4.1
 
 Two-way bindings are replaced by data down, actions up (DDAU).
@@ -28,7 +28,7 @@ Before:
 After:
 ```handlebars
 {{bs-datetimepicker date=mydate format='YYYY-MM-DD' updateDate=(action (mut model.date2))}}
-``` 
+```
 
 ## Basic Usage