If you find yourself looking to use both Subversion and Git together for any reason, in order to ignore all .svn folders in a project directory tree using your .gitignore file, add the following to your .gitignore file:
This assumes that no .svn directories or files inside of them have been committed yet. Also, note that there aren't any wildcard characters, (e.g. "*"). If you are using GitX, refresh your 'commit' view to see the changes after making this change to your .gitignore file.