Use the currenncy control to present and enter money amounts and currency
        information. The currency value control presents the currency with the amount, and a title
        of the control in one cell.
After switching to edit mode by tapping the Edit button, the user can: 
- Tap the amount to show the keypad, where you can enter the amount. 
 
- Tap the cell title to can select the amount type from the predefined
                    Amount/Currency/Value list, which you can customize. 
 
- Tap the currency to show a value help in a table view that contains the default
                    values of all the currencies known by the iOS locale framework.
 
 
            
