NoamB/sorcery — pull request #304 by tricknotes (2012-06-06 07:16:10+00:00)
Title: Fix broken provider name

When I use `add_provider_to_user` to add available provider,
the provider name was set as a module name (such as `Sorcery::Controller::Submodules::External::Providers::Facebook::FacebookClient`) against I expected.
This attribute should be a provider name (such as `'facebook'`).