###Getting started:
Follow Greg Bayers instructions here: http://gbayer.com/big-data/app-engine-datastore-how-to-efficiently-export-your-data/
Once you have the back-up files simply copy them to a folder named "data" at the site root.
Then, Using the google app engine desktop launcher start the app up. You should see a list of avaliable exports, Click one to create the CSV.
###Requirements:
google app engine desktop environment
###Warning:
This project was created to allow a single back-up to be created, it is possible it will not work with your data.