If you mean the source code, then:
Thanks for sharing the github link But I am looking for the documentation of these themes , if it have then it will be very helpful
These are official theme by Ghost. Currently there have no any documentation available for those themes but if anyone contribute for documentation that would be helpful for all.
Personally i think these are very simple and easy to use. So just install the theme and share us the problem if you don’t understand any particular things.