Plotberry

@scjody @BRONSOLO 

A plugin for the FINALCOUNTDOWN to 100,000

If you guys want better 10,9,8,7... messages just put them in there :)
The only issue I see with this is that if we get signup #100000 and #100001 within 10 seconds, we'll miss #100000 and skip the announcement.  I imagine it's possible to save state somewhere, so I'd save a state variable when the announcement has been made and use that to "continue" instead of rem < 0.