Meu .gitconfig e .gitignore

.gitconfig

[user]
	email = guilherme@3gweb.com.br
	name = Guilherme Mangabeira Gregio
[alias]
	st = status
	logger = log --pretty='%an realizou commit em %ad: %s' --graph
[color]
	diff = auto
	branch = auto
	status = auto
	log = auto
[core]
	excludesfile = path/to/gitignore/default
[credential]
	helper = osxkeychain
[diff]
	tool = diffmerge
[difftool "diffmerge"]
	cmd = diffmerge \"$LOCAL\" \"$REMOTE\"
[merge]
	tool = diffmerge
[mergetool "diffmerge"]
	cmd = "diffmerge --merge --result=\"$MERGED\" \"$LOCAL\" \"$(if test -f \"$BASE\"; then echo \"$BASE\"; else echo \"$LOCAL\"; fi)\" \"$REMOTE\""
	trustExitCode = true

.gitignore

.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
Icon?
ehthumbs.db
Thumbs.db