Translate Step 7
Translate Step 8
Update README's translation contributors part
Merge pull request #15 from FumihikoSHIROYAMA/step7

Translate Step 7
Merge pull request #16 from FumihikoSHIROYAMA/step8

Translate Step 8
Merge pull request #17 from FumihikoSHIROYAMA/update_readme

Update README's translation contributors part