github/gitignore — pull request #465 by jephir (2012-11-01 13:53:34+00:00)
Title: Prevent Unity .gitignore from ignoring non-Unity project files

Unity only generates project files in the top-level directory.
However, the current .gitignore will ignore all project files even
if they were not generated by Unity.

It is sometimes necessary to include non-Unity project files for
level editors or other utility projects that have been added to the
repository.