title: JsTree-grid doesn't display the data
body: <p>I'm working with the JsTree Ajax lazy load feature and to display the data I am using <a href="https://github.com/deitch/jstree-grid" rel="nofollow">JsTree-grid</a>. However, I am having the issue with display the data using the JsTree-grid on the second column. I've the following JSON data that I'm passing through the PHP using the JsTree ajax lazy load feature:</p>
  
  <pre><code>[    
      {
          "id": ​157749,
          "parent": "Sheet1.worksheet1webs44lx8GbsHu9igMc2vM_qWJqhePuo257PKZm_6Uo",
          "text": "Script 1: Login",
          "data": {
              "status": "Fail"
          }
      },
      {
          "id": ​104511,
          "parent": "Sheet1.worksheet1webs44lx8GbsHu9igMc2vM_qWJqhePuo257PKZm_6Uo",
          "text": "skip",
          "data": {
              "status": "Pass"
          }
      }
  ]
  </code></pre>
  
  <p>In the Javascript I've the following code:</p>
  
  <pre><code>$('#jstree').jstree({
      plugins: ['grid'],
          'grid': {
               'columns': [
                   {
                       'width': 50,
                       'header': 'Nodes'
                   },
                   {
                       'width': 30,
                       'header': 'Status',
                       'value': function (node) {
                           return (node.status);
                       }
                   }
               ]
           },
           'core' : {
               'data' : {
                   "url" : function (node) {
                       return node.id === '#' ? 'node' : 'tree/' + node.id;
                   },
                   'data' : function (node) {
                       return { 'id' : file.id, 'title' : file.title };
                   },
                   "dataType" : "json"
               }
           }
       });
  </code></pre>
  
  <p><strong>Note:</strong> When I console log the node on here: <code>'value': function (node) { console.log(node); }</code> I got the following result on the console:</p>
  
  <pre><code>Object { status: "Fail" }
  Object { status: "Pass" }
  </code></pre>
  
  <p>I would like to display the <code>status</code> <strong>Pass</strong> or <strong>Fail</strong> on the second JsTree-grid column. However, the JsTree-grid isn't displaying the data and I'm even not getting any error on the console. Please, can someone help me regarding what I want to achieve.</p>