title: How to clear input file with ng-file-upload directive?
body: <p>I am new to angular, and I am implementing the <a href="https://github.com/danialfarid/angular-file-upload" rel="nofollow">ng-file-upload directive</a>. Can someone please show me how to clear the file input after the upload is successful?</p>
  
  <p>I've tried a number of solutions online, and the only one I've managed to make it sort of working is with Jquery: <code>input.replaceWith(input.val('').clone(true));</code></p>
  
  <p>However, this only seem to clear it by appearance, I am still able to upload the supposedly cleared file if I try to submit again. </p>
  
  <p>If someone could help me out that would be great.</p>