Add current git branch name to bash prompt

CurrentGitBranchInBash

1. Edit .bashrc file and and the following entries

parse_git_branch() {
    git rev-parse --abbrev-ref HEAD 2> /dev/null | sed -e 's/^/(/' -e 's/$/) /'
}

if [ "$color_prompt" = yes ]; then
    PS1="${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w \[\e[91m\]\$(parse_git_branch)\[\033[00m\]\$ " 
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi