add perPositionHeight to PolygonGeometry and PolygonOutlineGeometry
fix scale to surface
Add example to sandcastle
Minor formatting and doc changes.
Merge branch 'master' into polygonPositionHeight
Fix typo.
Update CHANGES.md.
Merge pull request #1283 from AnalyticalGraphicsInc/polygonPositionHeight

Polygon per position height
Merge branch 'master' into nextPowerOfTwo

Conflicts:
	CHANGES.md