title: Why ListView is not working in WinJS?
body: <p>I am trying to do ListView using Json. But this is showing error as "WinJS.UI.ProcessAll() is undefined;". Did i miss anything?</p>
  
  <pre><code>//default.html
      &lt;body&gt;
       &lt;div data-win-control="WinJS.Binding.Template"&gt;
              &lt;h2 data-win-bind="textContent: title"&gt;&lt;/h2&gt;
              &lt;img data-win-bind="src: imageUrl;alt: title" /&gt;
          &lt;/div&gt;
  
         &lt;div id="itemTemplateDiv" data-win-control="WinJS.UI.ListView" data-win-options="{
             itemDataSource: Matlus.Data.itemsBindingList.dataSource,
             itemTemplate: select('#itemtemplateDiv')
              }"&gt;&lt;/div&gt;
      &lt;/body&gt;
  </code></pre>
  
  <hr>
  
  <pre><code>//default.js
  (function(){
      var app = WinJS.Application;
  
      app.onactivated = function (args) {
          downloadDataAsync().then(function (items){
              assignToListView(items);
              WinJS.UI.processAll();
          });
      };
      function downloadDataAsync() {
          return WinJS.xhr({ url: "http://matlusstorage.blob.core.windows.net/membervideos/AllMovies.json" }).then(function (xhr) {
              var movies = JSON.parse(xhr.responseText);
              //"[{\"Category\":\"Sci-Fi\",\"ImageUrl\":\"StarWarsEpisodeIV.jpg\",\"Title\":\"Star Wars Episode IV: A New Hope\",\"Year\":1977}
              //({title: item.Title, imageUrl: "http://matlusstorage.blob.core.windows.net/membervideos/" + item.imageUrl, category: item.category, year:});
              var items = [];
              for (var i = 0; i &lt; movies.length; i++) {
                  var item = movies[i];
                  items.push({ title: item.Title, imageUrl: "http://matlusstorage.blob.core.windows.net/membervideos/" + item.ImageUrl, category: item.Category, year: item.Year });
              }
              return items;
          });
      }
  
      function assignToListView(items) {
          Matlus.Data.itemsBindingList =  new WinJS.Binding.List(items);
      }
  
      WinJS.Namespace.define("Matlus.Data", {
          itemsBindingList: undefined, 
      });
  
      app.start();
  })();
  </code></pre>