ENHANCED: Wipe qL VOP

* Progresses towards 1 which is the intuitive behavior.
* Better example.
Merge pull request #6 from gadfly16/wipe

ENHANCED: Wipe qL VOP
NEW: Super Light qL OBJ

A grid area light with a superellipse shader driving both emission color
and opacity.
Merge pull request #7 from gadfly16/super_light_obj

NEW: Super Light qL OBJ