Their simple demo works for me with that particular
CDN reference to the library:
http://www.schillmania.com/projects/snowstorm/basic-example.html<html>
<head>
<title>DHTML SnowStorm: Basic Example</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Snowstorm/20131208/snowstorm-min.js"></script>
</head>
<body style="background:#6699cc;font:100 1.75em helvetica neue, helvetica,arial,verdana,sans-serif;color:#fff">
<h1 style="font-size:2em;margin:0px;font-weight:100">Example SnowStorm page</h1>
<p>
A single Javascript reference in the <head> tag is required for SnowStorm to work.
</p>
<p>
View the source of this page for reference.
</p>
</body>
</html>
