Open ~/.bash_profile
in your favorite editor and add the following content to the bottom.
# Git branch in prompt.
parse_git_branch() {
git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}
export PS1="Gzu 👻 \t:\w[\033[32m\]\$(parse_git_branch)\[\033[00m\] $ "
By MARTIN FITZPATRICK at http://martinfitzpatrick.name/article/add-git-branch-name-to-terminal-prompt-mac/