title: Parsing text with HTML tags into NSAttributedString
body: <p>I have a string containing HTML tags like this: </p>
  
  <pre><code> @"Lorem ipsum... &lt;b&gt;Bold sting..&lt;/b&gt;, then &lt;em&gt;emphasized sting...&lt;/em&gt; 
  normal text normal text &lt;b&gt;Bold sting..&lt;/b&gt; etc...."
  </code></pre>
  
  <p>I would like to store this different pieces in an attributed string. Those who are out of the tags should have a Times font, black stroke color and a font size of 14.0, the others should have the same attributes plus the bold/emphasized one.</p>
  
  <p>Thanks in advance.</p>
  
  <p>EDIT:</p>
  
  <p>I found this <a href="http://www.raywenderlich.com/4147/how-to-create-a-simple-magazine-app-with-core-text" rel="nofollow">guide</a>: but I'm a little bit confused on how to use the NSRegularExpression class..</p>