git clone https://github.com/brucejcw/spaceship-git-user.git "$ZSH/plugins/spaceship-git-user"
vim ~/.zshrc
plugins=(... spaceship-git-user)
source $ZSH/oh-my-zsh.sh
# add spaceship after source command
spaceship add git_user
SPACESHIP_GIT_USER_PREFIX
SPACESHIP_GIT_EMAIL_SYMBOL
SPACESHIP_GIT_USER_SYMBOL
SPACESHIP_GIT_USER_COLOR