For blogs on GitHub I use Jekyll. Seems to have quite a bit of support with some great plugins.
One important part missing: none of the posted entries are page-savable from a browser. Maybe your corner of the culture doesn't save pages to disk for ready reference, maybe this is a 'get off my lawn' issue, but.. Maybe a 'printable' link?
--crb3
You pointed in the right direction but kind of missed the big one: does not work without javascript at all.
For a really simple blog (or blogs in general) this is a PITA.