KarmaBot

Usage:

!pizza-- # I don't like it! <- Lower karma with a reason

!pizza++ # Yummie! <- Raise karma with a reason

!pizza++ <- Raise karma without a reason

!pizza? <- Check the karma level!

Karma level will be shown on each change: pizza has now 12 karma

When level is checked it will be:

pizza has 2 karma. Reasons: I don't like it! | Yummie!
Karma per user: @user1: -1 | @user2: +7 | @user3: +6