Removed ignores for Sublime as I no longer have config for it
Ignore netrwhist which is a history file generated by Vim

See http://stackoverflow.com/questions/9850360/what-is-netrwhist
Stop ignoring git/gitconfig.symlink

Not actually sure why this was ignored.  In any case I need to commit
some changes as I use OSX's keychain helper to manage my passwords, so I
can work with GitHub repos via HTTP in cases where a firewall blocks SSH
traffic.
Current .gitconfig settings