Use unicorn.
ruby 2.1.0
Tell heroku to use unicorn.
Add admins.
Set up omniauth-openid
Auth with the google.
Start the thing that handles omniauth logins.

I'm getting ActionController::InvalidAuthenticityToken
Get omniauth-openid+google to get into sessions#create.
Log in with google open id.
Use google email as username.
update todos.