Stick it in your .bash_profile

gistfile1.txt

if [ -f ~/.git-prompt.sh ]; then
 . ~/.git-prompt.sh
fi

GIT_PS1_SHOWDIRTYSTATE=true
GIT_PS1_SHOWSTASHSTATE=true
GIT_PS1_SHOWUNTRACKEDFILES=true
 
if [ -f /opt/local/etc/bash_completion ]; then
   . /opt/local/etc/bash_completion
fi
 
#PS1='\[\033[32m\]\u@\h\[\033[00m\]:\[\033[34m\]\w\[\033[01;31m\]$(__git_ps1)\[\033[00m\]\$ '
PS1="\[\033[32m\]\u@\h\[\033[00m\]:\[\033[31m\]\W\[\033[00m\]\[\033[36m\]\$(__git_ps1)\[\033[00m\]\$ "