README.md in sinatra-subdomain-0.2.0 vs README.md in sinatra-subdomain-0.2.1

@@ -38,19 +38,23 @@
 ```ruby
 require "sinatra"
 require "sinatra/subdomain"
 
 # Specify which subdomain you want
-subdomain :foo do
-  get '/' do
-    "render page for FOO"
+class MyApp < Sinatra::Base
+  register Sinatra::Subdomain
+
+  subdomain :foo do
+    get '/' do
+      "render page for FOO"
+    end
   end
-end
 
-# If any subdomain is set
-subdomain do
-  get '/' do
-    "render page for #{subdomain} subdomain"
+  # If any subdomain is set
+  subdomain do
+    get '/' do
+      "render page for #{subdomain} subdomain"
+    end
   end
 end
 ```
 
 By default, sinatra-subdomain will consider 1 TLD as in <tt>example.com</tt>.