[waldir]

Unfortunately the repository (as suggested by the screenshot[1]) seems to be private: https://github.com/github/help-docs

I assume that's because they may be documenting upcoming features before they are announced.

1. https://cloud.githubusercontent.com/assets/64050/5449088/7ad...

[fidz]

I wonder if they host everything on their own site (Github.com) or their own Github Enterprise site, which is inaccessible from outside network.