Merge pull request #1 from chansuke/master

update README.md
Merge pull request #2 from chansuke/master

create directory structure
Merge pull request #3 from chansuke/master

add .gitignore
Merge pull request #4 from chansuke/master

add directory
@htmlを追加
index4.htmlの更新
index4.htmlの更新とabout-us.htmlの追加
新しいページの追加
Merge pull request #5 from chansuke/master

update README.md