Make Asciinema compatible with LibreJS

[ole-tange]

I found out it is really not that hard to make Asciinema compatible with LibreJS. Add this to *.js:

// @license magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&dn=gpl-3.0.txt   
[code]
// @license-end

And for inline code:

  <script>
    // @license magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&dn=gpl-3.0.txt        
    AsciinemaPlayer.create('parallel.cast', document.getElementById('asciinema1'));
    // @license-end                                                                                
  </script>

See a live example on:

https://www.gnu.org/software/parallel/

May I suggest you insert these two lines in the js, and update the doc to add the lines to <script>, so we can help LibreJS spread free JavaScript?