<script src="http://use.edgefonts.net/league-gothic.js"></script>

I wonder why they pushed negotiation to the client side instead of doing like google. you need to send this http://use.edgefonts.net/league-gothic.js to your user instead of this http://fonts.googleapis.com/css?family=Source+Code+Pro in order to serve your font, and it won't work with js disabled.