index.html

<!DOCTYPE html>
<html>
<head>
    <title></title>

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.4/css/bootstrap.min.css">

    <style type="text/css">
        body {
            background: #999;
            padding: 10px;
        }
    </style>
</head>
<body>
<div class="container">
    <form id="generated-form"></form>
</div>


<button id="build-form-button" class="btn btn-primary">Build form</button>


<script src="app.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.2.0/js/tether.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.4/js/bootstrap.min.js"></script>
</body>
</html>