Convert JSON schema to Markdown

Hi all,

Since we are putting the finishing touches on the glTF spec (check out the progress), we wrote a tool to generate Markdown documentation from a JSON schema:

https://github.com/AnalyticalGraphicsInc/wetzel

Perhaps you will find this useful in your own work. We’ll continue to use it for glTF extensions, 3D Tiles, and maybe even CZML (there’s already a tool for that).

Patrick