Corrected example of use of the postal code validator.

MMSequeira · MMSequeira · commit 144a3664efd3 · 2011-11-24T21:56:48.000Z
diff --git a/README.md b/README.md
@@ -21,7 +21,7 @@ In your models, the gem provides new validators like `email`, or `url`:
       validates :twitter_at,    :twitter => { :format => :username_with_at }
       validates :twitter_url,   :twitter => { :format => :url }
       validates :twitter,       :twitter => true
-      validates :postal_code,   :postal_code => { :format => :us }
+      validates :postal_code,   :postal_code => { :country => :us }
     end
 
     class Article
