add support for new parameters
remove unnecessary methods
code reformat
value reconversion support for Item class
revert wrong changes in Item Soap Class
add currency conversion Api support
code reformat
currency conversion support in setAmount() method
delete unnecessary method setCurrency() and enable item_currency_x GET parameter
code reformat
removing unnecessary method call
code reformat
removing unnecessary attributes
add rounded reconversion with two decimals
mandatory number format with two dot separated decimal places
Merge pull request #4 from r3s7/add-currency-conversion-support

Same functions, with currency conversion support for DineroMail Pay Button (checkout)