Add some details on setting up a dev/test environment
Add some details on setting up a dev/test environment

ershad/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine,Shopify/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,perobertson/shipit-engine