item.type is deprecated

[ulitiy]

You use item.type, but it's not available in the latest stable versions of ruby.
citier / lib / citier / child_instance_methods.rb:39 for example
so it raises NoMethodError: undefined method `type'

[ulitiy]

Oh, that must be a column, sorry. But in your http://peterhamilton.github.com/citier/user_guide.html there is a column named :inheritance_column_name and there is no any word about the :type column. Maybe you should correct that in the user guide? Thank you for an excelent gem.