Although the name suggests differently, this is actually a user activity script. It watches for certain javascript events to guess whether or not the user is active on the page - and consequently the chance of the "user" actually being a bot.

Just add the script to the page

<script src="botDetect.js"></script>

Then the recommended way to use it is via the botDetect.onUser callback

<script>
botDetect.onUser(function () {
    // do something here when user activity is detected
});
</script>

You can also access the boolean botDetect.isUser and botDetect.isBot but these aren't recommended as user activity may only happen say 30 seconds after page load.