title: CHtml::link - how to add a html class?
body: <p>On docs we can read:</p>
  
  <pre><code>public static string link(string $text, mixed $url='#', array $htmlOptions=array ( ))
  </code></pre>
  
  <p>Question:
  I don't understand what $htmlOptions means here. I don't understand how to pass from this representation to a real code.</p>
  
  <p>Can anyone please provide an example about how can we generate a link with a class defined. 
  Something like:</p>
  
  <pre><code>&lt;a href="#" class="hello"&gt;link hello&lt;/a&gt;
  </code></pre>