GNOME’s Code of Conduct is now available for reference in a git repository. This repo contains the same text in Mardown and MoinMoin wiki markup formats. The CoC is maintained in Markdown, and converted/copied to the wiki when it changes.
While projects hosted in gitlab.gnome.org by default are covered by GNOME’s Code of Conduct, some people prefer to explicitly include a README-like file like code-of-conduct.md. You can now copy gnome-code-of-conduct.md from that repository into your own.
Enjoy!