git branch in bash prompt

bashrc.bash
# Add git branch if its present to PS1
parse_git_branch() {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
}

if [ "$color_prompt" = yes ]; then
  PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[01;31m\]$(parse_git_branch)\[\033[00m\] \$ '
else
  PS1='\u@\h:\w$(parse_git_branch) \$ '
fi