Hey, great gem. Just wanted to suggest that the [returns stuff](https://github.com/zdennis/activerecord-import/blob/506f765a7462ed4cbfcc1d42e769bd987a8680dc/lib/activerecord-import/import.rb#L6) is added to the readme/examples. I was just about to fork to implement this functionality but I see its already been done, just not mentioned in the help file. thanks