Code handoff guide

Code handoff is a necessary task at the end of projects. It can come in several forms, and each form has it's own precautions we need to take. We wrote this document a while back that describes the options and what tasks need to be done for each. It should probably be linked to from in here somewhere. 

https://docs.google.com/document/d/19iSNqmgjYQH3AlTwfWPzvEiix8JTYzQKYxnwSlpPp0Q/edit