update local source domain name
将对 http://dispatch-once.tk 的请求全部 301 重定向到 http://tomodachi.name
续上：添加 www.dispatch-once.tk
续上：添加 www.tomodachi.name
Update README.md
fix bugs
update robots.txt
bundle update
add /qrcode.[svg|jpg|jpeg|png|gif]
bundle update
fix
update to rails 4.0.0
see: https://devcenter.heroku.com/articles/rails-integration-gems
add turbolinks
madoka.tomodachi.name => kami.im
disable cookies in RedirectController
Revert "disable cookies in RedirectController"

This reverts commit 3d8476aa390233c6c2a8a6dfcffacff986b5370a.
disable session cookie globally