[pkg-apparmor] Bug#845232: Maybe add README.Debian

[intrigeri]

Christian Boltz:
> Am Donnerstag, 7. Dezember 2017, 09:40:04 CET schrieb intrigeri:
>>  - disabling use_group in notify.conf, so this (mostly useless AFAICT)
>> check does not harm UX

> Can you please submit this upstream?

Sure, will do!

> I agree that this check is useless - the relevant "check" is if someone 
> has permissions to a) read the audit.log or b) run aa-notify with sudo.

Thanks for confirming.