README.md in blank_slate-1.0.0 vs README.md in blank_slate-1.1.0

@@ -5,10 +5,13 @@
 This gem allows you to create null objects without resorting to
 method_missing to catch every message passed. Using method_missing
 means that your objects will respond to any method regardless of
 the behavior you designed in your other related classes.
 
+By default, a BlankSlate class will define methods to return `nil` so
+you don't have to.
+
 ## Installation
 
 Add this line to your application's Gemfile:
 
     gem 'blank_slate'
@@ -39,11 +42,11 @@
 
     # Create a blank slate but provide a specific value for a certain method
 
     GuestPresenter = BlankSlate(UserPresenter) do
       def welcome
-        "Sign-in or sign-up, cowboy!"
+        "Sign-in or sign-up, cowpoke!"
       end
     end
 
     def Present(user)
       user.authenticated? ? UserPresenter.new(user) : GuestPresenter.new(user)
@@ -55,9 +58,49 @@
     presenter.recent_searches # unauthenticated outputs nothing
     presenter.bad_method # raises an error in either case
 ```
 
 In the example above the call to `bad_method` would have continued with a null object (using method_missing) but failed for the good object. With BlankSlate, we get the behavior we want from both our regular class and the null stand-in.
+
+### Common ancestor
+
+BlankSlate will preserve the methods of the ancestor of the inherited class.
+
+```ruby
+    class Visitor
+      attr_reader :auth_info
+      def authenticated?
+        auth_info.to_h.has_key?('token')
+      end
+    end
+
+    class User < Visitor
+      def name
+        auth_info.to_h['name']
+      end
+      
+      def email
+        auth_info.to_h['email']
+      end
+    end
+
+    class Guest < BlankSlate(Visitor)
+      def name
+        "Guest"
+      end
+    end
+
+    user = User.new
+    user.auth_info = {'name' => 'Jim', 'email' => '[e-mail]', 'credentials' => 'valid stuff' }
+    user.name #=> "Jim"
+    user.authenticated? #=> true
+
+    guest = Guest.new
+    guest.auth_info = { }
+    guest.name #=> "Guest"
+    guest.authenticated? #=> false
+
+```
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)