It doesn't even have to be there, you could state what the license is on a website or in an e-mail. Sometimes you can find it in the header of source files (as seen here as well). Having a "LICENSE" or "COPYING" file in the root of the repository is just a common pattern made even more common by all the tools that can consume it automatically (including GitHub's UI).
It doesn't even have to be there, you could state what the license is on a website or in an e-mail. Sometimes you can find it in the header of source files (as seen here as well). Having a "LICENSE" or "COPYING" file in the root of the repository is just a common pattern made even more common by all the tools that can consume it automatically (including GitHub's UI).