Merge pull request #5 from ytake/develop

Update README.md
Update composer.json
Merge pull request #6 from ytake/develop

Develop
Merge pull request #7 from ytake/develop

Develop
Merge pull request #9 from ytake/develop

Develop
Merge pull request #10 from ytake/develop

update
Merge pull request #11 from ytake/develop

update composer.json
reneme
Merge pull request #12 from ytake/develop-refactor

reneme
Merge pull request #13 from ytake/master

merge