Run triggerOnStart async to allow parent to create

Enyo-DCO-1.1-Signed-off-by: Roy Sutton <roy.sutton@lge.com>
Merge pull request #874 from enyojs/ENYO-274

Run triggerOnStart async to allow parent to create

Reviewed-By: Cole Davis (cole.davis@lge.com)
Integrated-By: Aaron Tam (aaron.tam@lge.com)