authentication.rb in refinerycms-authentication-2.1.0

- old
+ new

@@ -1,5 +1,6 @@
 require 'refinerycms-core'
+require 'action_mailer'
 require 'devise'
 require 'friendly_id'
 
 module Refinery
   autoload :AuthenticationGenerator, 'generators/refinery/authentication/authentication_generator'