title: DataGrid in Dojo , with json data from a servlet
body: <p>I am using JSON for first time...
  and want to fill my datagrid with my JSON data,
  this is my JSON data :</p>
  
  <pre><code>{
    "head": {
      "vars": [ "s" , "fname" , "lname" ]
    } ,
    "results": {
      "bindings": [
        {
          "s": { "type": "uri" , "value": "http://tn.gov.in/Person/41" } ,
          "fname": { "type": "literal" , "value": " } ,
          "lname": { "type": "literal" ,n" }
        } ,
        {
          "s": { "type": "uri" , "value": "http://tn.gov.in/Person/37" } ,
          "fname": { "type": "literal" , "value": "sh" } ,
          "lname": { "type": "literal" , "value": "Vvan" }
        } ,
        {
          "s": { "type": "uri" , "value": "http://tn.gov.in/Person/39" } ,
          "fname": { "type": "literal" , "value": "Vavan " } ,
          "lname": { "type": "literal" , "value": "Sran" }
        }
      ]
    }
  }
  </code></pre>
  
  <p>I want to display <code>fname</code> and <code>lname</code> in the data grid how should I so it?
  can any one give a sample code which works for above JSON? I tried a lot with examples , i am getting a blank grid</p>