update

src/index.html

@@ -103,6 +103,7 @@
     </div>
     <script src="static/showdown.min.js"></script>
     <script src="static/qrcode/bwip-min.js"></script>
+    <script src="static/qrcode/html5-qrcode.min.js"></script>
     <script src="static/jquery.js"></script>
     <script src="static/gun.js"></script>
     <script src="static/webrtc.js"></script>