refs #1 add hello2.
refs #1 add hello3.
refs #3 add license.
Merge pull request #4 from ilmnb/feature/2_test

refs #1 add hello2.
refs #3 multi hello.
refs #3 resolve conflict.
Merge pull request #3 from ilmnb/feature/3_test

Feature/3 test
refs #6 リリース
refs #6 not free X(
Merge remote-tracking branch 'origin/release/v0.1' into release/v0.1
Merge branch 'release/v0.1'