Issuing and Exchange functions

Function definitions

Both functions are to be called on the Cash contract.

Request issue of Verified cash token for fiat paid in

payIn(_tokens, _payer, _currency)

Function parameter	Description
_tokens	number of cash tokens to issue
_payer	address of user paying in fiat currency
_currency	name of fiat currency paid in

Request exchange of Verified cash tokens

transferFrom(_fromCurrency, _toCurrency, _amount)

Function parameter	Description
_fromCurrency	address of Verified cash token to debit and convert from
_toCurrency	address of Verified cash token to exchange to and credit
_amount	name of the cash tokens to debit and convert