git clone http://github.com/ivar/dotfiles.git ~/.dotfiles/
ln -s ~/.dotfiles/git/gitconfig .gitconfig
ln -s ~/.dotfiles/git/gitignore .gitignore
ln -s ~/.dotfiles/aliases .aliases
source .aliases
from your shell's rc file
create a ~/.gitconfig.user
file that looks like:
[user]
name = Your Name
email = you@example.com