It [looks like](https://github.com/torproject/tor/community) if we create a `CODE_OF_CONDUCT` or `CODE_OF_CONDUCT.md` file in the top-most directory of our repo, Github will do some nice things to let new contributors know about it (along with asking them to read the `CONTRIBUTING` guidelines). Should we add [our code of conduct](https://gitweb.torproject.org/community/policies.git/tree/code_of_conduct.txt)? Or add a link to where it can be found?