エラー解決（メモ）An error occurred while installing mysql2 (0.5.3), and Bundler cannot continue.と、Make sure that `gem install mysql2 -v '0.5.3' --source 'https://rubygems.org/'` succeeds before bundling. - Qiita

エラー解決（メモ）An error occurred while installing mysql2 (0.5.3), and Bundler cannot continue.と、Make sure that `gem install mysql2 -v '0.5.3' --source 'https://rubygems.org/'` succeeds before bundling.likers

Kengo Obana@banaoh
Im UX engineer.