Feature request: Markdown licenses

[OxSon]

It would be nice to be able to generate a .md file with appropriate formatting for ones desired license.

I looked through the code to see if this was something I could deliver myself, and it looks like Markdown would not be an effortless fit into the current LANGS and LANG_CMT scheme.

A bare-bones implementation might only had a ## prefix to the first line. A more full-featured one might also attempt to provide a link to the users GithHub by looking in .gitconfig.