Merge pull request #1 from SatoshiYoshimura/develop

.DS_Store add .gitignore
Merge pull request #10 from SatoshiYoshimura/develop

Develop
Merge pull request #13 from SatoshiYoshimura/develop

Develop
Merge pull request #15 from SatoshiYoshimura/develop

Develop
merge
バグ修正