add perPositionHeight to PolygonGeometry and PolygonOutlineGeometry
fix scale to surface
Add example to sandcastle
Merge remote-tracking branch 'origin/master' into ddr
Added nextPowerOfTwo
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
Merge pull request #1287 from AnalyticalGraphicsInc/nextPowerOfTwo

Added Math.nextPowerOfTwo
Merge remote-tracking branch 'origin/master' into ddr
Merge branch 'ddr' into gltf
Merge gltf to gltfconverterupdate