Update readme

Author: maximecolin

Diff for: README.md

@@ -1,3 +1,66 @@
 #Wheels
 
 Wheels is a PHP implementation of the Command Bus pattern for DDD.
+
+[![Build Status](https://travis-ci.org/maximecolin/wheels.svg)](https://travis-ci.org/maximecolin/wheels)
+
+##Disclaimer
+
+This is a very basic and simple implementation. It has to grow up :)
+
+##Installation
+
+```
+composer require maximecolin/wheels
+```
+
+##Purpose
+
+The aim of the command bus pattern is to isolate your domain code in atomic, testable and reusable classes and to execute them through a dedicated service.
+
+##Usage
+
+Create a command class to handle data you need. Attributes can be set on contruct, fill through a form, set by other services, ...
+
+```
+class CreateArticleCommand implements CommandInterface
+{
+	public $title;
+	public $content;
+	
+	public function __construct($title, $content)
+	{
+		$this->title   = $title;
+		$this->content = $content;
+	}
+}
+```
+
+Create an handler which will process your command.
+
+```
+class CreateCommandHandler implements CommandHandlerInterface
+{
+	public function handle(CommandInterface $command)
+	{
+		// Place here you domain code which create an article ...
+	}
+}
+```
+
+
+
+```
+// Usualy, have a service to get the bus
+$bus = new CommandBus();
+$bus->addResolver(new ClassNameResolver());
+
+$command = new CreateArticleCommand('My article name', 'My article content');
+
+$bus->execute($command);
+```
+
+##Comming soon
+
+Event sourcing integration.
+