correct webgl specs
Merge remote-tracking branch 'origin/ddr' into gltf
Merge pull request #1282 from AnalyticalGraphicsInc/issue1159

Correct WebGL specs
Update CHANGES.md.
Merge branch 'master' into splines
Fix CHANGES.md
Merge pull request #1284 from AnalyticalGraphicsInc/splines

Splines
Merge master to gltf
Merge branch 'gltf' into gltfconverterupdate