Display current git branch at the command prompt (OS X)

gistfile1.sh

function parse_git_branch () {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}

RED="\[\033[0;31m\]"
YELLOW="\[\033[0;33m\]"
GREEN="\[\033[0;32m\]"
WHITE="\[\033[1;37m\]"
GRAY="\[\033[0;37m\]"
BLUE="\[\033[0;34m\]"
PURPLE="\[\033[0;35m\]"
NO_COLOUR="\[\033[0m\]"

PS1="$PURPLE\$(date +%H:%M) $GREEN\w$YELLOW\$(parse_git_branch) $NO_COLOUR\$ "

PATH=/usr/local/bin:$PATH:~/bin
export PATH

Copy this into ~/.bash_profile