Proposed content for petitboot v1.12

[Jeremy Kerr]

Hi Maxiwell,

> > You said that you've changed the NVRAM var to match with OF
> > convention (preboot-check instead of preboot_check) and added a bit
> > of wording to the config help screen. Did you push these
> > modifications?
> 
> Ah, looks like they were only on the old laptop! Thanks for the
> reminder, I'll re-do those changes.

OK, done. I've updated the master branch with a re-worked change for
the pre-boot check. Please let me know if that's OK with you.

Cheers,


Jeremy