adding payment procedure

E. Payments
1. During the day of payment the Mastercoin Foundation staff or board member responcible for making payment shall take the prior day's 3-day daily moving average from a well known Bitcoin exchange (i.e., as of 2013 Mtgox, Bitstamp) to calculate payment when a bounty, award or contract has been denominated in a non-virtual currency (USD, EUR, etc).
2. If payment cannot be made due to lack of a Bitcoin address from a payee, then calculation shall be made pursuant to Section E paragraph 1, and the funds in BTC shall be set aside until payee has provided a Bitcoin address.