I am using Git in my KiCad development and found that I had problems with
ignoring generated files.
After some stuffing around I found it was supposed to be handled through
configuring git to use the .bzringore file through a .gitconfig file.
However, this was not working correctly with the = sign missing in the config
file that I fixed.
Also, I took the opportunity to add a bit of explantion to the .gitconfig file
as to what its intention is and how to enable it correctly for the local
repository.