title: Type NSDecimalNumber in swift 3 with sdk paypal
body: <p>When I am creating the item to send to paypal I do the following</p>
  
  <pre><code>let ammountRequest: String = txtAmmount.text!
  let item = PayPalItem(name: "shop things", withQuantity: 1, withPrice: NSDecimalNumber(string: ammountRequest), withCurrency: "EUR", withSku: "Create Balance")
  
  let items = [item]
  let subtotal = PayPalItem.totalPrice(forItems: items)
  </code></pre>
  
  <p>If the "ammountRequest" equals 11.12 for example, on the page to pay will appear the 11 instead of the 11.12 as
  Can I do to appear the decimal places since they are being removed?</p>