upload.html

<script type="text/javascript">
// kiwi.plugins.load("/assets/file_upload.html")
$script("//api.filepicker.io/v1/filepicker.js", function () {
  var network = kiwi.components.Network();
  var control = kiwi.components.ControlInput();

  filepicker.setKey("AY8oiDSeTdaugLaTPYNBVz");
 
  function uploaded(files) {
    var area = $("#kiwi #controlbox textarea")
    for (var i = 0; files.length>i; i++) {
      area.val(area.val() + " " + files[i].url);
    }
  }
 
  filepicker.makeDropPane($("#kiwi #panels")[0], { onSuccess: uploaded });
  
  var $icon = $("<a class=\"upload\" title=\"Send File\"><i class=\"icon-upload-alt\"></i></a>");
  $icon.click(function () { filepicker.pickMultiple(uploaded); });

  control.addPluginIcon($icon);
});
</script>