def separator(string = "")
      if separators[options.size]
        separators[-1] += "\n#{string}"
      else
        separators[options.size] = string
      end
    end
def separator(string = "")
      if separators[options.size]
        separators[-1] += "\n#{string}"
      else
        separators[options.size] = string
      end
    end
Add a separator between options. Used when displaying
 the help text.