You could grab https://github.com/thoughtbot/til/commits/master.atom and select commits beginning with "TIL *" with Yahoo Pipes or something similar. I agree though, other posters' suggestions of gh-pages would be nice.
I keep my notes in an emacs .org mode document. I suspect a lot of people do this kind self improvement.
Why don't just make a single README.md and then split it if grows enormous.