Update README.md

Author: snapshotpl

Diff for: README.md

@@ -1,2 +1,36 @@
-# phpdebugbar
+# phpdebugbar middleware
 PHP Debug bar middleware with PSR-7
+
+This middleware provide framework-agnostic possibility to attach [PHP Debug bar](http://phpdebugbar.com/) to your response (html on non-html!).
+
+## Installation
+
+```json
+{
+    "require": {
+        "php-middleware/php-debug-bar": "^1.0.0"
+    }
+}
+```
+
+To build this middleware you need to injecting inside `PhpDebugBarMiddleware` instance `DebugBar\JavascriptRenderer` (you can get it from `DebugBar\StandardDebugBar`) and add middleware to your middleware runner.
+
+```php
+$debugbar = new DebugBar\StandardDebugBar();
+$debugbarRenderer = $debugbar->getJavascriptRenderer();
+$middleware = new PhpMiddleware\PhpDebugBar\PhpDebugBarMiddleware($debugbarRenderer);
+
+$app = new MiddlewareRunner();
+$app->add($middleware);
+$app->run($request, $response);
+```
+
+## It's just works with any modern php framework!
+
+Middleware tested on:
+* [Expressive](https://github.com/zendframework/zend-expressive)
+
+Middleware should works with:
+* [Slim 3.x](https://github.com/slimphp/Slim)
+
+And any other modern framework [supported middlewares and PSR-7](https://mwop.net/blog/2015-01-08-on-http-middleware-and-psr-7.html).