title: iOS 7 sizeWithAttributes: replacement for sizeWithFont:constrainedToSize
body: <p>How do you return a multiline text CGSize from the new iOS 7 method sizeWithAttributes?</p>
  
  <p>I would like this to produce the same results as sizeWithFont:constrainedToSize.</p>
  
  <pre><code>NSString *text = @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus eu urna quis lacus imperdiet scelerisque a nec neque. Mauris eget feugiat augue, vitae porttitor mi. Curabitur vitae sollicitudin augue. Donec id sapien eros. Proin consequat tellus in vehicula sagittis. Morbi sed felis a nibh hendrerit hendrerit. Lorem ipsum dolor sit."
  
  CGSize textSize = [text sizeWithAttributes:@{ NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Light" size:16.0] }];
  </code></pre>
  
  <p>This method only produces the height for a single line of text.</p>