[MvM] Demolition Mann

Past 72hr Jam Entry [MvM] Demolition Mann a2

Added a multiplayer version to the vpk. The popfile name is demolition_menn (I'm so clever right?)
It's completely untested and I have no way of grabbing six people to test it right now so its balance is probably completely out of whack. But I just don't have enough time, really, to do any more with it. :<
Jam was fun though! If it weren't on such a busy weekend I might have gotten a lot more done.