Gemfileにtwitterを追加＋bundle install
Revert "Gemfileにtwitterを追加＋bundle install"

This reverts commit cf2fb59ce7623ad6e9cd6068507f9987ae5efe52.
Revert "Revert "Gemfileにtwitterを追加＋bundle install""

This reverts commit 80f7b452afa6be6a21f5c610cd7f034ed227d36f.