#260
KhronosGroup/glTF#68
Forgot a few files KhronosGroup/glTF#68
Fixed CMakeLists to add new files. Corrected incorrect copyright information.
Fixed a few Mac issues and changed path attribute to uri.
Fixed uninitialized value causing empty Data URIs on some systems.
Fixed uninitialized value causing some systems to think a stream is open when its not.
Merge pull request #280 from tfili/embed-resource

KhronosGroup/glTF#68
Merge pull request #281 from tfili/gltf-file-extension

KhronosGroup/glTF#260
Merge remote-tracking branch 'khronos-gltf/dev-7' into scale-to-meters