Add GitHub Actions setting file

[y-yu]

• travis-ci.org is sunsetting 😢

  • Please be aware travis-ci.org will be shutting down in several weeks, with all accounts migrating to travis-ci.com. Please stay tuned here for more information.

• travis-ci.com has been required an application to use their resource unlimitedly even though we are OSS works
  • https://blog.travis-ci.com/2020-11-02-travis-ci-new-billing

  • We will be offering an allotment of OSS minutes that will be reviewed and allocated on a case by case basis. Should you want to apply for these credits please open a request with Travis CI support stating that you’d like to be considered for the OSS allotment

• So I try to move to GitHub Actions as the new CI
  • Example result: https://github.com/y-yu/ddskk/actions/runs/626872041

[conao3]

良いと思います。27.1も実行するように追記してもらえないでしょうか。

[conao3]

あとstrategy#fail-fastはfalseにしてもらえると嬉しいです。

[y-yu]

すいません。タイトルが英語だったので無駄に英語で書いてしまいました。

• 27.1も実行する
• strategy#fail-fastはfalse

👆 これをやります。