code: def install_gitflow():
      
      if not run('which git-flow', hide=True, warn=True).ok:
          run('wget --no-check-certificate -q -O /tmp/gitflow-installer.sh  https://raw.github.com/petervanderdoes/gitflow/develop/contrib/gitflow-installer.sh')
          run('sudo bash /tmp/gitflow-installer.sh install stable')
          run('rm /tmp/gitflow-installer.sh')
docs: Install git-flow if not found