title: Shopify - Cannot get custom cart field to show in order note_attributes
body: <p>I've tried many different ways, and nothing seems to add my custom field on my cart to the cart attributes like everywhere says you can. I don't understand. I've even used Shopify's UI generator and THAT's not working either. Here is the code I add:</p>
  
  <pre><code>&lt;p class="cart-attribute__field"&gt;
      &lt;label for="your-name"&gt;Your name&lt;/label&gt;
      &lt;textarea required class="required" id="your-name" name="attributes[Your name]"&gt;{{ cart.attributes["Your name"] }}&lt;/textarea&gt;
  &lt;/p&gt;  
  </code></pre>
  
  <p>Then I've tried this:</p>
  
  <pre><code>&lt;div style="width:300px; clear:both;"&gt;
    &lt;p&gt;
      &lt;label for="delivery_date"&gt;Pick a delivery date:&lt;/label&gt;
      &lt;input required class="required" id="delivery_date" type="text" name="attributes[delivery_date]" value="{{ cart.attributes.delivery_date }}" /&gt;
      &lt;span style="display:block" class="instructions"&gt; We do not deliver during the weekend.&lt;/span&gt;
    &lt;/p&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>That doesn't work either, it has something to do with the <code>attributes</code> but I can't figure out what.</p>
  
  <p>Anyone?</p>