STEP 07まで記述
STEP 09まで記述。
Merge branch 'master' into step-00
Merge branch 'step-00' into step-01
Merge branch 'step-01' into step-02
Merge branch 'step-02' into step-03
Merge branch 'step-03' into step-04
Merge branch 'step-04' into step-05