railsチュートリアルを見ながらデプロイしましたが、Heroku | Welcome to your new app!と出ます。hello worldとだすにはどうすればよいでしょうか?よろしくお願いします。
エラー
c2-user:~/environment (master) $ git push heroku master
Counting objects: 188, done.
Compressing objects: 100% (168/168), done.
Writing objects: 100% (188/188), 3.45 MiB | 6.62 MiB/s, done.
Total 188 (delta 39), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: ! No default language could be detected for this app.
remote: HINT: This occurs when Heroku cannot detect the buildpack to use for this application automatically.
remote: See https://devcenter.heroku.com/articles/buildpacks
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to kawablog.
remote:
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