<div class="container">
    <div class="demo_example">
        <div class="row-fluid">
            <div class="span4">
                Empty Box
            </div>
            <div class="span4 price">
                $10.00
            </div>
            <!-- 
The 'cartShingle_shelfItem' class tells us where 
to look for your item attributes on your page.
             -->
            <div class="span4 cartShingle_shelfItem">
                <input type="hidden"
                    class="item_token"
                    value="1141898787289079899"
                    data-name="Empty thing"
                    data-price="10.00"
                    data-thumbnail="https://cartshingle.com/assets/exampleImage1.png" />
                 <!-- 
When this button assigned to the 'item_add' class
is clicked, it will add the associated cartShingle_shelfItem 
to the shopping cart.
                 -->
                <a class="item_add" id="btn_add_to_cart">Add To Cart</a>
            </div>
        </div>
    </div>
</div>
$(function () {

    cartShingle.init('1994823472373064785');

});