Heroku & Rubyの場合: https://github.com/hidehiro98/line-bot-101
Firebase & JavaScriptの場合: https://github.com/hidehiro98/line-bot-firebase
Heroku: https://scrapbox.io/xhack-ttl-workshops/Herokuの使い方
Firebase: https://scrapbox.io/xhack-ttl-workshops/Firebaseの使い方
https://scrapbox.io/xhack-ttl-workshops/LINE_Developers_アカウント作成とbotの準備