hironomiu branch
Merge pull request #2 from hironomiu-vg/hironomiu

hironomiu branch
first commit
#3 step1
Merge pull request #4 from proshunsuke/pro-branch

Pro branch
Merge branch 'pro-branch'
#5 step2
Merge pull request #6 from proshunsuke/pro-step2

Pro step2
Merge branch 'pro-step2' into pro-step3
#7 step3
Merge pull request #8 from proshunsuke/pro-step3

Pro step3