Added info about the "service" key for the bundle (#230)

* Added info about the "service" key for the bundle

* Added "versionadded"

Author: Nyholm

integrations/symfony-bundle.rst

@@ -207,6 +207,20 @@ services are:
 * ``httplug.factory.socket``
 * ``httplug.factory.mock`` (Install ``php-http/mock-client`` first)
 
+.. note::
+
+    .. versionadded:: 1.10
+
+        If you already have a client service registered you can skip using the ``factory``
+        and use the ``service`` key instead.
+
+        .. code-block:: yaml
+
+            httplug:
+                clients:
+                    my_client:
+                        service: 'my_custom_client_service'
+
 Plugins
 ```````
 
@@ -366,7 +380,7 @@ To mock a response in your tests, do:
 
     // If your test has the client (BrowserKit) make multiple requests, you need to disable reboot as the kernel is rebooted on each request.
     // $client->disableReboot();
-    
+
     $response = $this->createMock('Psr\Http\Message\ResponseInterface');
     $response->method('getBody')->willReturn(/* Psr\Http\Message\Interface instance containing expected response content. */);
     $client->getContainer()->get('httplug.client.mock')->addResponse($response);

integrations/symfony-full-configuration.rst

@@ -71,6 +71,7 @@ This page shows an example of all configuration values provided by the bundle.
         clients:
             acme:
                 factory: 'httplug.factory.guzzle6'
+                service: 'my_service'       # Can not be used with "factory" or "config"
                 flexible_client: false      # Can only be true if http_methods_client is false
                 http_methods_client: false  # Can only be true if flexible_client is false
                 config: