Added a method registerDisplayObject() in displayobject.js that attaches to the root oCanvas object. This makes it as easy to register a new display object as it is to register a new normal module.
Added a method registerDisplayObject() in displayobject.js that attaches to the root oCanvas object. This makes it as easy to register a new display object as it is to register a new normal module.

1up-lab/ocanvas,koggdal/ocanvas