DojoCastのRSSフィードを実装してiTunesから購読できるようにする #363
Description
cf. DojoCast - Highlight people around CoderDojo communities by Podcast 📻✨
cf. https://coderdojo.jp/podcasts
cf. iTunes RSS generator - Apple (for Preview)
https://rss.itunes.apple.com/
