<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.9.0/css/bootstrap-datepicker3.standalone.css" integrity="sha256-a3Tf3yz6sgXlfpMWo4K3hLkVop5naZZPVUgB/YVrTwk=" crossorigin="anonymous" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.9.0/js/bootstrap-datepicker.min.js" integrity="sha256-bqVeqGdJ7h/lYPq6xrPv/YGzMEb6dNxlfiTUHSgRCp8=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.9.0/locales/bootstrap-datepicker.ru.min.js" integrity="sha256-iGDUwn2IPSzlnLlVeCe3M4ZIxQxjUoDYdEO6oBZw/Go=" crossorigin="anonymous"></script>
<div class="container">
<h4>Why is it not working?</h4>
<div id='dp' class="row col-md-4">
<div class="input-daterange input-group" id="datepicker">
<input type="text" class="input-sm form-control" name="start" />
<span class="input-group-addon">to</span>
<input type="text" class="input-sm form-control" name="end" />
</div>
</div>
</div>
