title: How to change keyboard's DONE button,iPhone
body: <p>I have 2 textfields, for login id and password.
  When user taps on email id, they keyboard type is email and for password, its default.
  They done button of both the keyboards, dismisses the keyboard.
  WHat i am trying to do is, once user fills both the id and password, they DONE button should be changed to "LOGIN" and i can perform selector method on it to login.</p>
  
  <p>Can this be doable?</p>
  
  <p>Thanks</p>