Makes welcome screen work using a sessions controller

app/controllers/users/sessions_controller.rb

@@ -0,0 +1,11 @@
+class Users::SessionsController < Devise::SessionsController
+
+  def after_sign_in_path_for(resource)
+    if resource.show_welcome_screen?
+      welcome_path
+    else
+      root_path
+    end
+  end
+
+end