title: UIDatePicker show only month and day
body: <p>I'd like to have a <code>UIDatePicker</code> where the user can pick a month and a day but not the year. I'm aware that leap years have an extra day, so for simplicity, let's throw that day away.</p>
  
  <p>Is there any way to remove the year column or have 2 reels with month/day that act like the <code>UIDatePicker</code> (grey out days that don't exist in the selected month)?</p>