title: h:commandButton with twitter bootstrap or other icon
body: <p>I am using twitter bootstrap css to style. To make icon buttons in it, the standard way is to use "i" tags.
  <code>&lt;button type="submit"&gt;&lt;i class="icon-search"&gt;&lt;/i&gt;&lt;/button&gt;</code>.<br/><br/>
  But I cant enter it within
     <code>&lt;h:commandButton id="myid"&gt;&lt;i class="icon-search"&gt;&lt;/i&gt;&lt;/h:commandButton&gt;</code>
  How can I add HTML within the rendered     <code>&lt;h:commandButton&gt;</code> ?</p>