SimpleBanker

Added a config to change the coins and bills

{
  "currencies": {
    "Coin1": 1.0,
    "Bill5": 5.0,
    "Bill10": 10.0,
    "Bill25": 25.0,
    "Bill50": 50.0,
    "Bill100": 100.0,
    "Bill250": 250.0,
    "Bill500": 500.0,
    "Bill1000": 1000.0,
    "Bill5000": 5000.0
  }
}