#15 Declaring a winner

[Greg Scharlemann]

When playing the game, if everyone asserts and loses
except for one player, that player is still in the
game, playing with themself. I believe they should be
declared the winner.

There is a commented section in the
e.l.l.server.Game.makeAssertion method that considers
this. We just need to figure out how we are going to
handle this.

I think the remaining user should win and we end the game.