This is a spinoff of the Addon "LockNotes". I used it on my lock forever and loved it, but I wanted to see similar functionality for all my other characters.
What this does is pops up a message in the middle of the screen (like when you enter a new zone) alerting you to procs and your class buffs dropping.
Currently supports all classes but not every proc out there is accounted for. If you find a proc or buff that isn't included in this addon please feel free to contact me and I'll gladly add it.
No configuration required.
You must have Blizzard's Floating combat text enabled after 3.3 for ProcNotes to work properly. You only need the feature enabled, none of the options (so you won't see it spam).