Fix directories the project is on top level dir

lib/active_model/serializer/version.rb

@@ -0,0 +1,5 @@
+module ActiveModel
+  class Serializer
+    VERSION = "0.8.1"
+  end
+end

lib/active_model_serializers.rb

@@ -1,9 +1,10 @@
-require 'newbase/active_model/serializer'
-require 'newbase/active_model/serializer_support'
+require 'active_model'
+require 'active_model/serializer'
+require 'active_model/serializer_support'
 
 begin
   require 'action_controller'
-  require 'newbase/action_controller/serialization'
+  require 'action_controller/serialization'
 
   ActiveSupport.on_load(:action_controller) do
     include ::ActionController::Serialization