title: koGrid Row selection did not updating the row selection checkbox
body: <p>I have used KoGrid in my web page and I had opted for multiple row selection. as a result of which a checkbox column as first has been added in my grid. but when I select the KoGrid by clicking on the row the check box is marked but when I clicked on the checkbox the row got selected but checkbox is empty.</p>
  
  <p>My KoGrid configuration code is as follows:</p>
  
  <pre><code>gridOptions = {
              data: "Some Data",
              columnDefs: [
                  { field: 'TransactionId', displayName: 'Transaction ID' },
                  { field: 'InvoiceNumber', displayName: 'Invoice Number' },
                  { field: 'ContactName', displayName: 'Contact Name' },
                  { field: 'Carrier', displayName: 'Carrier' },
                  { field: 'InvoiceDate', displayName: 'Invoice Date' },
                  { field: 'Amount', displayName: 'Amount' },
                  { field: 'PaymentStatus', displayName: 'Payment Status' },
                  { field: 'IsPastDue', displayName: 'Is Past Due', cellTemplate: '&lt;label class="gridCheckBox"&gt;&lt;input type="checkbox" data-bind="checked: $data.getProperty($parent)"&gt;&lt;/label&gt;&lt;/div&gt;' },
                  { field: 'DaysPastDue', displayName: 'Days Past Due' }
              ]
          };
  </code></pre>
  
  <p>Not able to find what exactly is the problem.</p>
  
  <p>Please help.
  Thanks</p>