added a run() method to HttpCache to mimic Application

doc/extensions/http_cache.rst

@@ -40,9 +40,9 @@ setting Response HTTP cache headers::
     });
 
 This extension allows you to use the Symfony2 reverse proxy natively with
-Silex applications by using the `http_cache` service to handle the Request::
+Silex applications by using the `http_cache` service::
 
-    $app['http_cache']->handle()->send();
+    $app['http_cache']->run();
 
 The extension also provide `ESI
 <http://www.doctrine-project.org/docs/dbal/2.0/en/>`_ support::
@@ -69,7 +69,7 @@ The extension also provide `ESI
         ));
     });
 
-    $app['http_cache']->handle()->send();
+    $app['http_cache']->run();
 
 For more information, consult the `Symfony2 HTTP Cache documentation
 <http://symfony.com/doc/current/book/http_cache.html>`_.

src/Silex/Extension/HttpCacheExtension.php

@@ -13,7 +13,7 @@ namespace Silex\Extension;
 
 use Silex\Application;
 use Silex\ExtensionInterface;
-use Symfony\Component\HttpKernel\HttpCache\HttpCache;
+use Silex\HttpCache;
 use Symfony\Component\HttpKernel\HttpCache\Esi;
 use Symfony\Component\HttpKernel\HttpCache\Store;
 

src/Silex/HttpCache.php

+<?php
+
+/*
+ * This file is part of the Silex framework.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Silex;
+
+use Symfony\Component\HttpKernel\HttpCache\HttpCache as BaseHttpCache;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * HTTP Cache extension to allow using the run() shortcut.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class HttpCache extends BaseHttpCache
+{
+    public function run(Request $request = null)
+    {
+        if (null === $request) {
+            $request = Request::createFromGlobals();
+        }
+
+        $this->handle($request)->send();
+    }
+}