There was a discussion on storing passwords in source control here: https://news.ycombinator.com/item?id=5178914 https://news.ycombinator.com/item?id=5178914, A

There was a discussion on storing passwords in source control here: https://news.ycombinator.com/item?id=5178914 https://news.ycombinator.com/item?id=5178914, Although if you plan to discontinue development entirely you could just substitute keys with placeholders (YOUR_KEY_HERE) and make a note of it in your README.