Have an indication in the rendered docs of public/internal/private status

[balupton]

When including private and internal methods in the rendered docs, there's no visual distinguishment between them. I'd like to have just one set of rendered docs for all my methods, which both core-devs and end-developers can use.

[gjtorikian]

This should be fixed by #59, /cc @maschs.

[balupton]

#59 is nice, that'll do.