booty-datepicker

        <form role="form" class="form-horizontal">
            <div class="form-group">
                <div class="col-md-4">
                    <div class="input-group">
                        <input type="text" class="form-control" placeholder="yyyy-mm-dd"/>
                        <span class="input-group-addon" data-toggle="booty-datepicker">
                            <span class="glyphicon glyphicon-calendar"></span>
                        </span>
                    </div>
                </div>
            </div>
        </form>