I just want to make a note that Tobi (Shopify's CEO) has made great contributions to Rails open source ecosystem with projects like Liquid and ActiveMerchant, which he started:
We leverage these projects daily, so it's awesome to see his company doing so well. In addition, we're on Shopify's platform as a app developer, so his company has added a lot of value, both commercially and non-commercially to developers, not just e-commerce merchants.
I can't agree more with this comment, for anybody using Jekyll, it's worth noting it is the templating language it uses, and my experience pretty much resembles this.
I was pretty much able to dive straight into Shopify templating and leverage the docs as I went without even having a background in Rails or Ruby.