Badge/Shield

Hi. I think it'd be very useful to have a keybase badge, something like:


with a link to Keybase profile, or a more detailed one including proofs etc. Or it can be easily implemented by a third party too, but a standart solution would be better.

The issue names no repository file, test, or entry point. Start by reviewing the proposed shields.io badge and clarifying whether the standard should link to a Keybase profile or include proofs. Done means an agreed badge design and documented implementation scope.

Written by the indexing model from the issue text.