title: How to change UIBarButtonItem image size
body: <p>Using UIBarbuttonItem, initWithImage I get a picture that I want smaller.</p>
  
  <p>I feel like there is absolutely no way to resize the image.</p>
  
  <p>UIedgeInsetMake does not operate at all. Resizing the picutre does not operate either (pixelate). 
  I have an @2x 48x48 icon and a normal 24x24. creating a new picture with bigger empty border does not operate.</p>
  
  <p>If I use a 20x20 it will pixelate. no matter what.</p>
  
  <p>Any solution? Thanks!</p>