$ readme-style.md --max-grade 8
[exit 0]
--- stdout
readme-style.md  ·  Grade 5, easy to read
  PASS  grade 4.6 is within --max-grade 8

  1 passive
  mean of ARI 6.1, FK 4.0, Fog 3.8 · 16 sentences

  27:39  passive    'are labeled'

Tips
  passive    Name who does the action and make them the subject.
--- stderr

