update README

README.md

@@ -1,3 +1,33 @@
 # K9u.Framework
 
 [![badge](https://github.com/kawanamiyuu/K9u.Framework/workflows/CI/badge.svg)](https://github.com/kawanamiyuu/K9u.Framework/actions?query=workflow%3ACI)
+
+```php
+use Acme\BarMiddleware;
+use Acme\BuzRequestHandler;
+use Acme\FooMiddleware;
+use K9u\Framework\ApplicationInterface;
+use K9u\Framework\FrameworkModule;
+use Laminas\Diactoros\ServerRequestFactory;
+use Ray\Compiler\ScriptInjector;
+use Ray\Di\Bind;
+use Ray\Di\InjectorInterface;
+
+$module = new FrameworkModule([
+    FooMiddleware::class,
+    BarMiddleware::class,
+    BuzRequestHandler::class,
+]);
+
+$injector = new ScriptInjector('/path/to/cache', function () use (&$injector, $module) {
+    (new Bind($module->getContainer(), InjectorInterface::class))->toInstance($injector);
+    return $module;
+});
+
+$app = $injector->getInstance(ApplicationInterface::class);
+assert($app instanceof ApplicationInterface);
+
+$request = ServerRequestFactory::fromGlobals();
+
+$app($request); // handle request and emit response
+```