title: How to access file input with knockout binding?
body: <p>Given the following code: </p>
  
  <pre><code>&lt;input data-bind="event: { change: uploadImage(this.files[0]) }" style="width: 10px;" type="file"&gt;
  </code></pre>
  
  <p>I get an error saying "files is not defined".  I'm trying to convert this demo: </p>
  
  <p><a href="https://github.com/paulrouget/miniuploader/blob/gh-pages/index.html" rel="noreferrer">https://github.com/paulrouget/miniuploader/blob/gh-pages/index.html</a></p>
  
  <p>To a knockout-friendly implementation. The error happens when I load the page.  Any idea how I can access the file, if it's been specified by the user?  </p>
  
  <p>jsfiddle : <a href="http://jsfiddle.net/LkqTU/9597/" rel="noreferrer">http://jsfiddle.net/LkqTU/9597/</a></p>