Add section about CUMULUSCI_KEY and create a Project Configuration section
Add section about CUMULUSCI_KEY and create a Project Configuration
section

SalesforceFoundation/CumulusCI,e02d96ec16/CumulusCI,SalesforceFoundation/CumulusCI,e02d96ec16/CumulusCI,cdcarter/CumulusCI,Joble/CumulusCI