COMMON.md

http://stackoverflow.com/questions/11537968/selecting-a-specific-metafield-for-a-product-using-shopify-api-ruby-on-rails

https://shopifyengineering.myshopify.com/blogs/archived/17488020-new-feature-metafields

http://www.rubydoc.info/github/Shopify/shopify_api/Object

ARCHFLAGS="-arch x86_64" bundle install

https://shopifycustomizer.herokuapp.com