Don't render if width or height is 0.
Remove unused CSS class.
Resize every frame, before rendering, instead of every 60.

Removes the need for window resize listeners as well.
Finish appearance reference doc
Update CHANGES.
Merge pull request #896 from AnalyticalGraphicsInc/issue834

Don't render if width or height is 0.
Added debug for vectors
Merge remote-tracking branch 'origin/master' into batching
Merge branch 'batching' into extrudePolygon
corrected subdivide wall positions