You can clone with
HTTPS or Subversion.
Wouldn't it be good if the exception will be raised when trying to save User (< ActiveRecord::Base) with "authentication_type => :session" or UserSession (< Authlogic::Session::Base) with "authentication_type => :user" ?
Or maybe it should be mentioned in README... Otherwise it could be difficult to figure out why no redirect happened (well, at least for me it was).