title: knockout js stuck with very simple but can't
body: <p>I get some json objects from server but I can't get them to my view. What is that I am doing wrong.</p>
  
  <p>I have a jsfiddle here: <a href="http://jsfiddle.net/cy6kC/" rel="nofollow">http://jsfiddle.net/cy6kC/</a></p>
  
  <pre><code> var volModel = function() {
   self.Vol = ko.observable({"ID": 1,"Name": 1});
   }
   var volunteerModel = new volModel();
   ko.applyBindings(new volunteerModel());
  </code></pre>