Configurable alert cutoff for each entry about org-alert

[ntBre]

I think I handled this in bddb342. I used the suggested property name from #20 (REMINDERN), but also added a variable org-alert-cutoff-prop so that you can set your own. Give it a try and let me know if you run into any issues!

[ntBre]

I totally agree, I think this is why I've left #20 open too. I've been meaning to look into this, but I'd be glad to accept a PR for it if you want to give it a try.

[pataquets]

That's great, @ntBre. Thank you!
The customizable property name it's a smart addition.
Tip for those using akhramov/org-wild-notifier.el: the property name should be WILD_NOTIFIER_NOTIFY_BEFORE.
Also, I'm afraid you forgot to cross out the last item in the readme's TODO section 😁

[ntBre]

No problem, thanks for the suggestion! Ahh, good catch on the readme. I'll delete that TODO and add what you said about org-wild-notifier too. Thanks again!