Merge pull request #311 from differentreality/openid

Only show openid options if providers are set in User model.

app/controllers/users/omniauth_callbacks_controller.rb

@@ -2,7 +2,7 @@ module Users
   class OmniauthCallbacksController < Devise::OmniauthCallbacksController
     skip_before_filter :verify_authenticity_token
 
-    [:novell, :google, :facebook, :twitter].each do |provider|
+    User.omniauth_providers.each do |provider|
       define_method(provider) { handle(provider) }
     end