Solution to Yahoo! Bingo challenge

Took me a while to notice that the url was to the repo
(only after I solved it and saw no winning url or email sent)
Because of that, there's no git history :(

* Just learned how to use socket.io
* Logic of bingo inside socket events are limited, it's all controlled
by the Bingo object
* #markRaffledNumber receives a string, parse it and set valid numbers as 0
* #isWinner checks for full rows/columns/diagonals and return true / false
* Underscore was used just to make things a lil' bit easier
Removing tests at the bottom

* Tests where useful while developing for the Bingo modules
* They look bad because only the numbers where being changed
* #assert function had two parameters for a while (msg, truthy), that's why there are some different calls to it..
* didn't keep the tests because reseting the values was kind of annoying
* Debug msgs are being left on purpose (otherwise it's hard to understand what is happening)