Adds git branch/status to command prompt

.bashrc

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

function we_are_in_git_work_tree {
    git rev-parse --is-inside-work-tree &> /dev/null
}

function parse_git_status {
    if we_are_in_git_work_tree
    then
    local ST=$(git status --short 2> /dev/null)
    if [ -n "$ST" ]
    then echo -n "*"
    else echo -n ""
    fi
    fi
}

export PS1="\u \[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\]\$(parse_git_status) > "