Re-push v2.1.3 build

Pre-built dependencies

v2.1.2 Release

Release v2.1.1

Release v2.1.0

Merge pull request KhronosGroup#81 from KhronosGroup/2.0-fix-ema-simp…

…le-skin

Check quaternion decomposition direction for axis angle

appveyor.yml -> .appveyor.yml, remove latest tag hook from travis

Removed the type/value setup for KHR_materials_common values. It shou…

…ld just be the value.