README.md in strong_json-0.2.0 vs README.md in strong_json-0.3.0

@@ -24,15 +24,24 @@
 ## Usage
 
 ```ruby
 s = StrongJSON.new do
   let :item, object(id: prohibited, name: string, count: numeric)
-  let :custoemr, object(name: string, address: string, phone: string, email: optional(string))
+  let :customer, object(name: string, address: string, phone: string, email: optional(string))
   let :order, object(customer: customer, items: array(item))
 end
 
 json = s.order.coerce(JSON.parse(input), symbolize_names: true)
 s.order =~ JSON.parse(input, symbolize_names: true)
+
+case JSON.parse(input2, symbolize_names: true)
+when s.item
+  # input2 is an item
+when s.customer
+  # input2 is a customer
+else
+  # input2 is something else
+end
 ```
 
 If the input JSON data conforms to `order`'s structure, the `json` will be that value.
 
 If the input JSON contains attributes which is not white-listed in the definition, it will raise an exception.