title: How to customize the "BarcodeScanner" in ionic 3
body: <p>I am facing an issue in customizing the design for (QR code scan screen) in ionic 3 which exists in ionic BarcodeScanner library.
  I need help in customizing this screen, add header, footer, and buttons.
  In the attachment, there is a screen shot for the design and screen shot for the QR code scan in ionic.</p>
  
  <p>Appreciate your help guys.</p>
  
  <p><a href="https://i.stack.imgur.com/SkEIg.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SkEIg.jpg" alt="the QR code scan screen and the design which I want to use"></a></p>