Add README

Author: snapshotpl

README.md

@@ -1,2 +1,37 @@
-# block-robots [![Build Status](https://travis-ci.org/php-middleware/block-robots.svg)](https://travis-ci.org/php-middleware/block-robots)
+# block-robots middleware [![Build Status](https://travis-ci.org/php-middleware/block-robots.svg)](https://travis-ci.org/php-middleware/block-robots)
 Middleware to avoid search engine indexing
+
+This middleware provide framework-agnostic possibility to preventing your site from being indexed.
+
+## How it works?
+
+* Add `X-Robots-Tag` with `noindex, nofollow` value.
+* Add `robots.txt` with `Disallow: /` body
+
+## Installation
+
+```json
+{
+    "require": {
+        "php-middleware/block-robots": "^1.0.0"
+    }
+}
+```
+
+```php
+$blockRobotsMiddleware = new PhpMiddleware\BlockRobots\BlockRobotsMiddleware();
+
+$app = new MiddlewareRunner();
+$app->add($blockRobotsMiddleware);
+$app->run($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).