Remove deprecated use of this.get('childViews') in
'updateChildViews' methods.

Calling pushObjects on the childViews was causing
deprecation warnings in Ember JS, asking the user
to treat the container view instance as an
Ember.Mutable.Array. Calling the method directly
on the instance removed the warnings.

I ran the build script to update the diet files as
well.
Merge pull request #1 from tennety/master

Remove deprecated use of this.get('childViews') in  'updateChildViews' methods.