地震が起こった時、台風がくる時、火事が起こった時、どうしたらいいんだろう？ 具体例をまじえながら学んでみよう！
Faceboo auth is required to view user page.
If you have logged in since, it's automatically executed. If first time, Facebook auth login page will be shown, after your authorization, you can access user page.
