first look at contributing to opsschool

Awesome project!

Was bored on an aeroplane and wrote a bit about things dear to my heart, like automounters.  Also fixed some blatant apostrophe abuse and wrote a bit about backups and daemons. I don't expect anyone to commit this as-is, of course, but I'm putting it out there for feedback.

Of course like any normal person I skipped the documentation (meta/*) and went straight into writing :-) so I have some cleanups to do there re: style.