This is an updated example of Shopify's repo for the Unite 2018 app walkthrough. I found the tutorial very helpful, but some of the instructions were outdated and or not working. This repo will serve to be a revamped version of their demonstrated Shopify app walkthrough. Please note: I'm in no way affiliated with Shopify.
View the original repo here
Start the revamped walkthrough by going to the "walkthrough" directory
View the final result of the walkthrough in the "complete-app" directory