Show more examples with config (php-http#202)

* Show more examples with config * Promote createWithConfig

Author: Nyholm

clients/guzzle6-adapter.rst

@@ -16,21 +16,32 @@ not yet included in your project), run:
 Usage
 -----
 
-Begin by creating a Guzzle client, passing any configuration parameters you
-like::
+To create a Guzzle6 adapter you should use the `createWithConfig()` function. It will let you to pass Guzzle configuration
+to the client::
 
- use GuzzleHttp\Client as GuzzleClient;
+ use Http\Adapter\Guzzle6\Client as GuzzleAdapter;
 
  $config = [
- // Config params
+ 'verify' => false,
+ 'timeout' => 2,
+ 'handler' => //...
+ // ...
  ];
- $guzzle = new GuzzleClient($config);
+ $adapter = GuzzleAdapter::createWithConfig($config);
 
-Then create the adapter::
+.. note::
 
- use Http\Adapter\Guzzle6\Client as GuzzleAdapter;
+ If you want even more control over your Guzzle object, you may give a Guzzle client as first argument to the adapter's
+ constructor::
 
- $adapter = new GuzzleAdapter($guzzle);
+ use GuzzleHttp\Client as GuzzleClient;
+ use Http\Adapter\Guzzle6\Client as GuzzleAdapter;
+
+ $config = ['verify' => false ];
+ // ...
+ $guzzle = new GuzzleClient($config);
+ // ...
+ $adapter = new GuzzleAdapter($guzzle);
 
 And use it to send synchronous requests::
 
@@ -50,6 +61,7 @@ Or send asynchronous ones::
  // Returns a Http\Promise\Promise
  $promise = $adapter->sendAsyncRequest(request);
 
+
 .. include:: includes/further-reading-async.inc
 
 .. _Guzzle 6 HTTP client: http://docs.guzzlephp.org/