docs: def add_user(username='',password='',group='', site_user=False):
      """
      Adds the username
      """
      if group: group = '-g %s'% group
      if not site_user:
          run('echo %s:%s > /tmp/users.txt'% (username,password))
      if not site_user:
          sudo('useradd -m -s /bin/bash %s %s'% (group,username))
          sudo('chpasswd < /tmp/users.txt')
          sudo('rm -rf /tmp/users.txt')
      else:
          sudo('useradd -M -d /var/www -s /bin/bash %s'% username)
          sudo('usermod -a -G www-data %s'% username)