title: Jexcel - Need to add <input type="file" > on change of dropdown in place of last col dropdown
body: <p>Working with jexcel javascript 3rd party library -</p>
  <p>On second last dropdown is selected as attachment then Need to change last dropdown column of that row to input file.</p>
  <pre class="lang-js prettyprint-override"><code>$('#mytable').jexcel({ 
              minDimensions: [1, 1],
              about:&quot;&quot;,
              colWidths: [ 100, 100, 100, 100, 100],
              colHeaders: ['test1', 'test2', 'test3', 'test4', 'test5'],
                  columns: [
                      { type: 'dropdown', autocomplete:true },
                      { type: 'numeric',  mask:'$ #,##.00'},
                      { type: 'text' },
                      { type: 'dropdown', source:['Zip code attachment','Custom attachment'] },
                      { type: 'dropdown', filter: test,autocomplete: true, multiple:true, },
                  ]
         })
  
  </code></pre>
  <p>Please help if any one work on Jexcel.</p>