Improve documentation of covenant logic

[Chronial]

I thought I'd add some more info about our connection logic to the readme.

[0int]

So according to the readme it seems like Darkmoon covenant logic doesnt take the sin level into account, neither it can check if Anor Londo is dark, right?

[Chronial]

Yes, we don't know whether Anor Londo is dark, but you are preferably connected to players that are in the same are as you and have Indictments