Create a logo

Just for kicks really, it'd be nice to have a logo for buffyboard even if just for using in the README. As a quick idea, we could go all in on the vampire theme and extend the lower end of both "f"s with vampire tooth, as demonstrated on this quick mock-up:

The tooth-f's could be colored differently than the rest of the text maybe to make them stand out.

Cropping the logo to just the tooth-f's, we could also create a square variant of it for use as an icon.