Hiding the keyboard in TabBar app

[iJohnwickham]

Let me start by saying I am brand new to development of any kind, so please don't use any advanced terms.

I have made an Tab Bar based application that consists of a single Text Field. I need to know how to add the done button to the keyboard that hides it. I had made an app without a tab bar and added the done key just fine, but now it wont let me me drag the Event to File's Owner

If it is possible, I would love to use the bar seen in Safari that has the Previous Next and Done keys.

Help is much appreciated.