How can I make the fittext.js plugin work?

Hello!
I'm a newbie on Edge, so please bear with me.
I've been trying to make the fittext.js plugin (http://fittextjs.com/) work on my project but is not doing anything in preview.

This is what I have on my Stage on creation complete:

  yepnope( { load: "edge_includes/jquery.fittext.js" } );

$("h1").fitText();

I have my text elements as h1. I tried doing it with ids ( $("#title").fitText(); ) instead and I still get no result.
Am I missing something?

Thanks!