複数選択削除機能
strong parameter 削除
Merged in feature/44_checkbox_delete (pull request #4)

複数選択削除機能
ユーザ通知メール機能
Merged in feature/45_user_mailer (pull request #5)

ユーザ通知メール機能
rss配信機能追加
routes変更
Merged in feature/rss (pull request #6)

rss配信機能追加