Update README.md

README.md

@@ -13,7 +13,8 @@ class Person < ValidatedObject::Base
 end
 
 # Instantiating it runs the validations.
-me = Person.new(name: 'Robb')
+me  = Person.new(name: 'Robb')
+you = Person.new(name: '')      # => "ArgumentError: Name can't be blank"
 ```
 
 Note how Person's two lines of code are nothing new: `attr_reader` is standard Ruby. [`validates`](https://guides.rubyonrails.org/active_record_validations.html) is standard Rails. I use classes like these as Data Transfer Objects at my system boundaries.