All you need to do to integrate Linkify into your web page is to simply add the Linkify script tag inside the <HEAD> tag of your web page. A Linkified web page HTML would look pretty much like the source code below.
<html>
<head>
<http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Linkify Test Page<title>
<script type="text/javascript" src="http://www-static.linkify.mobi/api/linkify.js?key=YOUR_API_KEY">
</script>
</head>
<body>...</body>
</html>