added autorouting to documentation

Author: transistive

README.md

@@ -155,7 +155,8 @@ use GuzzleHttp\Client;
 use GuzzleHttp\Handler\CurlHandler;
 use GuzzleHttp\HandlerStack;
 use GuzzleHttp\Middleware;
-use Laudis\Neo4j\Network\Bolt\BoltInjections;use Laudis\Neo4j\Network\Http\HttpInjections;
+use Laudis\Neo4j\Network\Bolt\BoltInjections;
+use Laudis\Neo4j\Network\Http\HttpInjections;
 
 $client = Laudis\Neo4j\ClientBuilder::create()
     ->addHttpConnection('backup', 'http://neo4j:password@localhost', HttpInjections::create()->withClient(static function () {
@@ -169,6 +170,31 @@ $client = Laudis\Neo4j\ClientBuilder::create()
 
 Wrapping the injections in a callable will enforce lazy initialization.
 
+### Clusters and routing
+
+Cluster support is always available when directly connecting to the responsible servers. If you do not need to fine tune these connections, autorouting is available for bolt connections:
+
+```php
+use Laudis\Neo4j\Network\Bolt\BoltInjections;
+
+$client = Laudis\Neo4j\ClientBuilder::create()
+    ->addBoltConnection(
+        'main',
+        'http://neo4j:password@any-server-with-routing-information',
+         BoltInjections::create()->withAutoRouting(true)
+     )
+    ->addBoltConnection('backup', 'http://neo4j:password@non-replicated-server')
+    ->setDefaultConnection('main')
+    ->build();
+
+$client->run('RETURN 1'); // will run over a random follower found in the routing table
+$client->run('MERGE (x:Y {z: 0)'); //will run over a random leader found in the routing table
+$client->run('RETURN 1', [], 'backup'); //will run over the non replicated server
+$client->run('RETURN 1', [], 'main'); //will be autorouted
+```
+
+NOTE: http cluster support will be available in the next minor release and will have practically the same api.
+
 ## Final Remarks
 
 ### Filosophy