Change glue code to use new enyo.dom.addBodyClass() method to allow for deferring class changes until app is rendered

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Merge pull request #10 from enyojs/GF-12279-unwiredben

Change glue code to use new enyo.dom.addBodyClass() method to allow for ...