theme.liquid

<!-- Begin Recently Viewed Products -->

{{ '//ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.min.js' | script_tag }}
{{ 'jquery.products.min.js' | asset_url | script_tag }}

{% if template contains 'product' %}

<script>
Shopify.Products.recordRecentlyViewed();
</script>

{% endif %}

<!-- End Recently Viewed Products -->