type attr cleanup

and sizes up top

lib/parfait/meta_class.rb

@@ -20,11 +20,14 @@ module Parfait
   class MetaClass < Object
     include Behaviour
 
-    attr_reader :type, :instance_type , :instance_methods , :clazz
+    attr_reader :instance_type , :instance_methods , :clazz
 
     def self.type_length
       4
     end
+    def self.memory_size
+      8
+    end
 
     def initialize( clazz )
       super()