title: Create UIImage from 2 UIImages and label
body: <p>I got one big <code>UIImage</code>. Over this <code>UIImage</code> i got one more, witch is actually a mask. And one more - i got <code>UILabel</code> over this mask! Witch is text for the picture.</p>
  
  <p>I want to combine all this parts in one <code>UIImage</code> to save it to Camera Roll!</p>
  
  <p>How should I do it?</p>
  
  <p>UPD. How should i add <code>UITextView</code>?</p>
  
  <p>i found:</p>
  
  <pre><code>[[myTextView layer] renderInContext:UIGraphicsGetCurrentContext()];
  </code></pre>
  
  <p>But this method doesn't place myTextView on the right place.</p>