Contributions to the glTF-Tutorials repository

The main [glTF tutorial](https://github.com/KhronosGroup/glTF-Tutorials/tree/master/gltfTutorial#gltf-tutorial) explains the concepts of glTF, explaining the format itself, its features and its application cases. This tutorial does not cover implementation details. While it may be a good starting point as a general introduction, more focused tutorials may be added here.

Some examples:

- Explaining the best practices for using `.gltf` or `.glb` format. This is already discussed in https://github.com/KhronosGroup/glTF/issues/1117 , and the results may be added here
- Tutorials on the implementation of PBR. This has already been started at https://github.com/moneimne/glTF-Tutorials/tree/master/PBR
- Examples showing how to use glTF in plain WebGL or any other graphics API (OpenGL, Direct3D, Vulkan...). This might eventually even be a tutorial on implementing a full glTF renderer
- Examples and usage patterns for glTF in rendering libraries like three.js, Babylon.js and others
- Translations of existing tutorials to other languages (?)
- ...

If you want to contribute a tutorial, feel free to open an issue so that its scope, goals and structure can be discussed, or open a pull request with your contributions.

Review the existing gltfTutorial and the started PBR tutorial before choosing a focused topic. Use the linked glTF issue for glTF/glb best-practice context, then define the tutorial's scope, goals, and structure in an issue or contribute it through a pull request; done means a complete, focused tutorial is proposed or added.

Written by the indexing model from the issue text.