export to GitHub

[arrocke]

• Completed books should be exported to a GitHub repo with a creative commons license
• This should happen at most once a night, maybe once a week
• Changes to completed chapters should be exported as well
• We'll also need to export the Hebrew/Greek data we use so others can reference that to align our data with theirs

[tycebrown]

It looks like we could setup a cron job to periodically backup all completed books to github.