Update README with details on configuration.

README.md

@@ -18,7 +18,7 @@ The Persistence interfaces are rather overkill for many implementations in the N
 
 Following vendors are targeted:
 
-* Microsoft Azure Table
+* Microsoft Azure Table (Implemented)
 * Amazon DynamoDB
 * CouchDB
 * MongoDB
@@ -36,7 +36,7 @@ Suppose we track e-mail campaigns based on campaign id and recipients.
     use Doctrine\KeyValueStore\Mapping\Annotations as KeyValue;
 
     /**
-     * @KeyValue\Entity
+     * @KeyValue\Entity(storageName="responses")
      */
     class Response
     {
@@ -67,3 +67,43 @@ Suppose we track e-mail campaigns based on campaign id and recipients.
 
     $entityManager->flush();
 
+## Configuration
+
+There is no factory yet that simplifies the creation process, here is the
+full code necessary to instantiate a KeyValue EntityManager with a Doctrine
+Cache backend:
+
+    use Doctrine\KeyValueStore\EntityManager;
+    use Doctrine\KeyValueStore\Mapping\AnnotationDriver;
+    use Doctrine\KeyValueStore\Storage\DoctrineCacheStorage;
+    use Doctrine\Common\Cache\ArrayCache;
+    use Doctrine\Common\Annotations\AnnotationReader;
+
+    $storage = new DoctrineCacheStorage($cache);
+    $cache = new ArrayCache;
+    $metadata = new AnnotationDriver(new AnnotationReader);
+    $entityManager = new EntityManager($storage, $cache, $metadata);
+
+If you want to use WindowsAzure Table you can use the following configuration
+to instantiate the storage:
+
+    use Doctrine\KeyValueStore\Storage\WindowsAzureTableStorage;
+    use Doctrine\KeyValueStore\Storage\WindowsAzureTable\SharedKeyLiteAuthorization;
+    use Doctrine\KeyValueStore\Http\SocketClient;
+
+    $name = ""; // Windows Azure Storage Account Name
+    $key = ""; // Windows Azure Storage Account Key
+
+    $auth = new SharedKeyLiteAuthorization($name, $key);
+    $storage = new WindowsAzureTableStorage(new SocketClient(), $name, $auth);
+
+If you want to use Doctrine DBAL as backend:
+
+    $params = array();
+    $tableName = "storage";
+    $idColumnName = "id";
+    $dataColumnName = "serialized_data";
+
+    $conn = DriverManager::getConnection($params);
+    $storage = new DBALStorage($conn, $tableName, $idColumnName, $dataColumnName);
+