tiltnyc/tilt — pull request #3 by justinjmoses (2012-01-31 05:15:16+00:00)
Title: Adding transactions

adding tracking of positive and negative balances via transactions. investments are automatice negatives and allocations from user panel are positives.

added total funds to user model.

changed `Investment.stage` from a `String` into `Investment.round` which is an integer reflecting the round of investment (1, 2 or 3).