title: How to add JSON data to an observableArray
body: <p>In the html page i have a view model</p>
  
  <pre><code> AppViewModel = {
          people : ko.observableArray([
          {
              fName : 'john'
              lName :'conor'
          }, {
              city  : 'dallas'
          }, {
              state : 'texas'
          } ]),
  
  
      };
  </code></pre>
  
  <p>and i fetch the json data from the server in the format</p>
  
  <pre><code>{
                  fName : 'john'
                  lName :'conor'
              }, {
                  city  : 'dallas'
              }, {
                  state : 'texas'
              }
  </code></pre>
  
  <p>i want the json data to get added to the array(push), anything like AppViewModel.people.push(ko.mapping.fromJS(jsondata, viewModel))
  but it is not working.
   Any ideas?</p>