title: Get file object from file Input
body: <p>I'm trying to use a react-bootstrap file input with jquery <code>fileupload()</code>. With straight jquery I would do <code>$('#fileUpload').prop('files')</code> to get the files to pass to the fileupload call. However, I don't know how to get the files correctly with react-bootstrap.</p>
  
  <pre><code>&lt;Input type='file' label='Upload' accept='.txt' ref='fileUpload' buttonAfter={uploadFileButton}/&gt;
  </code></pre>