title: Adding customer tags to order printer template in Shopify
body: <p>Sorry, I only have a very basic understanding of liquid but I am trying to add customer tags to our printed orders via the Shopify Order Printer app. I have previously edited the template by referring to the liquid variable list but when adding the customer.tags variable it is not returning anything.
  The customer.tags variable is not shown in the reference for the order printer template but appears elsewhere so I'm not even sure if I can use in in this template. 
  The provided syntax in the reference is </p>
  
  <p><code>{% for tag in customers.tags %}
    {{ tag }}
  {% endfor %}</code></p>
  
  <p>Any help would be greatly appreciated. . thanks</p>