Make example player mount snippets LibreJS compatible

Author: ku1ik

docs/getting-started.md

@@ -192,7 +192,9 @@ the standalone player on your website like this:
   ...
   <script src="/asciinema-player.min.js"></script>
   <script>
+    // @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0
     AsciinemaPlayer.create('/demo.cast', document.getElementById('demo'));
+    // @license-end
   </script>
 </body>
 </html>

docs/manual/player/quick-start.md

@@ -48,7 +48,9 @@ inside an empty container `<div>` element:
   ...
   <script src="/asciinema-player.min.js"></script>
   <script>
+    // @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0
     AsciinemaPlayer.create('/demo.cast', document.getElementById('demo'));
+    // @license-end
   </script>
 </body>
 </html>
@@ -75,6 +77,10 @@ AsciinemaPlayer.create('/demo.cast', document.getElementById('demo'));
 
 Finally, include player's CSS file in your site CSS bundle. It's at `dist/bundle/asciinema-player.css` in the npm package.
 
+If you need LibreJS compatibility when using a JavaScript bundler, add LibreJS
+license metadata to your final application bundle and any inline JavaScript on
+the page.
+
 ## Basic usage
 
 In the code snippets above we initialized the player by calling `create` with 2