Docs for brand assets

[anon71687268]

A clear description of expectations when using the official ClassicPress logo, including language on how brand assets should be sized, named, free of alterations, etc.

[james]

Definitely. cc @BlueSkyPhoenix @scott for your help with this - once we have something here I will put it up on a docs page.

[viktor]

For reference, brand guildelines and assets can be found here.