Merge pull request #3 from y-undertree/master

fork merge test
edx test
feature-002
Merge pull request #4 from ogawa-tigertech/master

feature-002
base merge
features 001 test
feature-003
Merge pull request #5 from ogawa-tigertech/master

feature-003
Merge branch 'l-torataro/master'
master merge feature-001