def form(alias_name, user, host, options)
      retuned = "\n"
      retuned += "Host #{alias_name}\n"
      retuned += "  HostName #{host}\n"
      retuned += "  User #{user}\n"

      options.file_content.each_pair do |key, value|
        retuned += value
      end
      retuned

    end
def form(alias_name, user, host, options)
      retuned = "\n"
      retuned += "Host #{alias_name}\n"
      retuned += "  HostName #{host}\n"
      retuned += "  User #{user}\n"

      options.file_content.each_pair do |key, value|
        retuned += value
      end
      retuned

    end
add(alias_name, user, host, options)

 returns the text that will be added to the config file