Merge pull request #3 from php-cache/readme

Improved readme

Author: Nyholm

README.md

@@ -1,7 +1,24 @@
-# Redis PSR-6 adapter using PhpRedis 
-[![Build Status](https://travis-ci.org/php-cache/redis-adapter.svg?branch=master)](https://travis-ci.org/php-cache/redis-adapter) [![codecov.io](https://codecov.io/github/php-cache/redis-adapter/coverage.svg?branch=master)](https://codecov.io/github/php-cache/redis-adapter?branch=master)
+# Redis PSR-6 Cache pool 
+[![Latest Stable Version](https://poser.pugx.org/cache/redis-adapter/v/stable)](https://packagist.org/packages/cache/redis-adapter) [![codecov.io](https://codecov.io/github/php-cache/redis-adapter/coverage.svg?branch=master)](https://codecov.io/github/php-cache/redis-adapter?branch=master) [![Build Status](https://travis-ci.org/php-cache/redis-adapter.svg?branch=master)](https://travis-ci.org/php-cache/redis-adapter) [![Total Downloads](https://poser.pugx.org/cache/redis-adapter/downloads)](https://packagist.org/packages/cache/redis-adapter)  [![Monthly Downloads](https://poser.pugx.org/cache/redis-adapter/d/monthly.png)](https://packagist.org/packages/cache/redis-adapter) [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
 
-This is a implementation for the PSR-6 for PhpRedis cache. This implementation supports tags. 
+This is a PSR-6 cache implementation for Redis. It is a part of the PHP Cache organisation. To read about 
+features like tagging and hierarchy support please read the shared documentation at [www.php-cache.com](http://www.php-cache.com). 
 
-This implementation is using [PhpRedis](https://github.com/phpredis/phpredis). If you want an adapter with
- [Predis](https://github.com/nrk/predis) you should look at our [Predis adapter](https://github.com/php-cache/predis-adapter). 
+This implementation is using [PhpRedis](https://github.com/phpredis/phpredis). If you want an adapter with 
+[Predis](https://github.com/nrk/predis) you should look at our [Predis adapter](https://github.com/php-cache/predis-adapter). 
+
+### Install
+
+```bash
+composer require cache/redis-adapter
+```
+
+### Configure
+
+To create an instance of `RedisCachePool` you need to configure a `\Redis` client. 
+
+```php
+$client = new \Redis();
+$client->connect('127.0.0.1', 6379);
+$pool = new RedisCachePool($client);
+```