Using a free account for that type of application is an abuse of Github. Free accounts are for open source projects. Get yourself a payed account for that.
I wouldn't consider this abuse of the tool. I'm also learning a few things about the home improvement process from this. Isn't that the point of the open source movement -- shared knowledge for the improvement of others?
I don't think free public repositories are gift to the open source community, but freemium system designed to get people to convert to paid accounts with additional features. This project doesn't require the additional features.
Actually, there are no extra features with GH's paid plans, from what I remember. Paying enables private repositories, and all of the good stuff is still available for open source projects.