README.md in sinclair-1.3.2 vs README.md in sinclair-1.3.3

@@ -12,11 +12,11 @@
 that enables creation of methods on the fly through class
 methods
 
 Yard Documentation
 -------------------
-https://www.rubydoc.info/gems/sinclair/1.3.2
+https://www.rubydoc.info/gems/sinclair/1.3.3
 
 Installation
 ---------------
   - Install it
 
@@ -328,9 +328,41 @@
 
   MyConfigurable.reset_config
 
   MyConfigurable.config.host # returns nil
   MyConfigurable.config.port # returns 80
+```
+
+Configurations can also be done through custom classes
+
+```ruby
+  class MyServerConfig
+    def url
+      if @port
+        "http://#{@host}:#{@port}"
+      else
+        "http://#{@host}"
+      end
+    end
+  end
+
+  class Client
+    extend Sinclair::Configurable
+
+    configurable_by MyServerConfig, with: %i[host port]
+  end
+
+  Client.configure do
+    host 'interstella.com'
+  end
+
+  Client.config.url # returns 'http://interstella.com'
+
+  Client.configure do |config|
+    config.port 8080
+  end
+
+  Client.config.url # returns 'http://interstella.com:8080'
 ```
 
 RSspec matcher
 ---------------