code: def show_rules():
      
      from rules.loader import import_rules
      from rules.rule_list import all_rules
      rules = import_rules(all_rules)
      print("")
      for name, rule in rules.iteritems():
          heading = "{} (`{}`)".format(rule.description(), name)
          print("#### {} ####".format(heading))
          for line in rule.reason():
              print(line)
          print("")
      sys.exit(0)
docs: Show the list of available rules and quit
      :return: