Add reference links to *.frag documentation

[Deleted user]

• https://stackoverflow.com/questions/6432838/what-is-the-correct-file-extension-for-glsl-shaders
• https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/

[cgvirus]

Can you clarify? Currently no documentation is planned. Olive uses .frag and .vert AFIK.

[Deleted user]

I mean that need add few links and short description to what Olive extention is and how user could create/write own extention.

[cgvirus]

I will try to come up with a convenient template for this. Right now waiting for furtherOCIO implementation to be finished. Thanks for the suggestion.