title: jQuery Chosen does not show data-placeholder when it is filled
body: <p>I am using jQuery Chosen plugin in my ASP.NET MVC application. The <code>data-placeholder</code> attribute is not working when the dropdownlist has items in it. Instead of showing default text it automatically selects the first item in the list.</p>
  
  <p>This is how I define my dropdownlist.</p>
  
  <pre><code>@Html.DropDownListFor(m =&gt; m.Keep, Model.Data, 
       new { @class = "chzn-select", data_placeholder = "Default..." })
  </code></pre>
  
  <p>If Model.Data is empty (it is filled in view model using EF), then default text is displayed. Otherwise, the first item is selected. I always want my dropdownlist to show default value.</p>
  
  <p>I apply the plugin via <code>$('.chzn-select').chosen();</code> Nothing special.</p>
  
  <p>Any ideas ? Thanks in advance.</p>