title: IQKeyboardManager with CustomTextField (SkyFloatingLabelTextField) using Swift 3
body: <p>I am using the <code>SkyFloatingLabelTextField</code> which is a custom <code>UITextField</code>. After Adding the <code>IQKeyboardManager</code> into my Podfile (<code>pod install</code>), it was expected that it will automatically handle the keyboard issue. </p>
  
  <p>Any clue to integrate <code>IQKeyboardManager</code> with <code>customTextfield</code>? </p>