First brief readme

Author: Nyholm

README.md

@@ -1,2 +1,28 @@
-# DoctrineCachePoolBundle
-Doctrine Cache Pool Bundle
+# Doctrine Cache Bundle
+
+This bundle registers PSR6 cache services that wraps the doctrine cache. 
+
+## Configuration and usage
+
+```yaml
+
+doctrine_cache:
+  providers:
+    acme_file_system_cache:
+      extension: '.fsc'
+      directory: '%kernel.root_dir%/var/storage/fs_cache/'
+      type: file_system
+    acme_apc_cache:
+      type: apc
+      namespace: my_ns
+```
+
+``` php
+
+/** @var CacheItemPoolInterface $cacheProvider */
+$cacheProvider = $this->container->get('doctrine.acme_apc_cache');
+
+/** @var CacheItemInterface $item */
+$item = $cacheProvider->getItem('cache-key');
+
+```