Solve Layout from atton
Solve sugoroku from atton
Create answer for section_of_prime_number
Fix sugoroku from atton
Fix sugoroku, use stdin variable
Merge pull request #110 from ie-ProCon/issue#103_atton

Solve Layout from atton
Merge pull request #118 from ie-ProCon/issue#112_atton

Solve sugoroku from atton
Merge pull request #120 from ie-ProCon/issue#116_siman

Create answer for section_of_prime_number
Merge remote-tracking branch 'origin/master' into chapter2-7