feat: evaluator should not returns hash as string

Fix #3
6 jobs for evaluator-returns-hash in 6 minutes and 13 seconds
Status Name Job ID Coverage
  Test
passed foodcritic #79984512

00:02:39

passed git_history #79984515

00:02:37

passed kitchen #79984517
docker gce

00:06:12

passed lines_length #79984514

00:02:18

passed rspec #79984516

00:02:26

passed rubocop #79984513

00:02:10