update README

README.md

@@ -2,21 +2,31 @@
 
 [![badge](https://github.com/kawanamiyuu/K9u.Framework/workflows/CI/badge.svg)](https://github.com/kawanamiyuu/K9u.Framework/actions?query=workflow%3ACI)
 
+## Overview
+
 ```php
-use Acme\BarMiddleware;
-use Acme\BuzRequestHandler;
-use Acme\FooMiddleware;
 use K9u\Framework\ApplicationInterface;
 use K9u\Framework\CachedInjectorFactory;
+use K9u\Framework\Demo\FakeMiddleware;
+use K9u\Framework\Demo\FakeRequestHandler;
 use K9u\Framework\FrameworkModule;
 use Laminas\Diactoros\ServerRequestFactory;
+use Ray\Di\AbstractModule;
+
+class AppModule extends AbstractModule
+{
+    protected function configure()
+    {
+        $middlewares = [
+            FakeMiddleware::class,
+            FakeRequestHandler::class
+        ];
 
-$module = new FrameworkModule([
-    FooMiddleware::class,
-    BarMiddleware::class,
-    BuzRequestHandler::class,
-]);
+        $this->install(new FrameworkModule($middlewares));
+    }
+}
 
+$module = new AppModule();
 $injector = (new CachedInjectorFactory('/path/to/cache'))($module);
 
 $app = $injector->getInstance(ApplicationInterface::class);
@@ -26,3 +36,16 @@ $request = ServerRequestFactory::fromGlobals();
 
 $app($request); // handle request and emit response
 ```
+
+## Run demo application
+
+See [demo](demo/).
+
+```bash
+git clone https://github.com/kawanamiyuu/K9u.Framework.git
+cd K9u.Framework
+composer install
+composer serve:demo
+
+# access to http://localhost:8080
+```