Changed attachment_defintiions from an accessor to a reader

git-svn-id: https://svn.thoughtbot.com/plugins/paperclip/trunk@235 7bbfaf0e-4d1d-0410-9690-a8bb5f8ef2aa

lib/paperclip.rb

@@ -152,7 +152,7 @@ module Thoughtbot #:nodoc:
         @attachment_definitions ||= {}
         @attachment_definitions ||= {}
         
         
         class << self
         class << self
-          attr_accessor :attachment_definitions
+          attr_reader :attachment_definitions
         end
         end
         
         
         include InstanceMethods
         include InstanceMethods