This directory contains globally useful gitignores, e.g. OS-specific and editor specific.
For more on global gitignores: https://help.github.com/en/github/using-git/ignoring-files#configuring-ignored-files-for-all-repositories-on-your-computer
And a good blog post about 'em: http://augustl.com/blog/2009/global_gitignores