This is the compare engine, writen in Javascript.
run on your terminal the following command:
grunt
And checkout the dist/ dir.
Copy the dist/ dir to your project. Then paste this html code snippet in your index.html file:
<link rel="stylesheet" href="styles/75492796.main.css">
<script data-main="scripts/7f86cc88.main" src="components/requirejs/require.js"></script>