title: Vertically align NSAttributedString with different sized characters
body: <p>I have been googling around for a while now and I am still surprised in iOS6 there is no way to <strong>vertically</strong> align an <code>NSAttributedString</code> with chars of different sizes? In particular I am trying to vertically align it as a <code>UIButton</code> title property, is that feasible?</p>