title: How to include return button in UIKeyboardTypeDecimalPad?
body: <p>I am implemented a <code>UITextField</code> which is supposed to only let user include decimal numbers. I have changed the keyboard type to <code>UIKeyboardTypeDecimalPad</code> but there is no return button on this keyboard layout to get out of the text field. I don't want to add extra controls on the keyboard as it looks messy. How can I change the <code>dot</code> button to return and change its functionality or is there another alternative?</p>