Restart for Graviex exchange

Chris will be making a restart in about 12 hours to add support for the Graviex exchange. Graviex trades in many of the coins that TradeSatoshi is discontinuing on March 31, allowing us to provide uninterrupted offerings for these coins.

Graviex will also allow Chris to add a few new coins in the coming week. The restart will take about 30 seconds.