Update Resources/doc/reference/installation.rst

new Sonata\CacheBundle\SonataCacheBundle(),

not added in the composer. Brakes the cache:lear

Resources/doc/reference/installation.rst

@@ -53,7 +53,6 @@ Next, be sure to enable this bundles in your AppKernel.php file:
         return array(
             // ...
             new Sonata\BlockBundle\SonataBlockBundle(),
-            new Sonata\CacheBundle\SonataCacheBundle(),
             new Sonata\jQueryBundle\SonatajQueryBundle(),
             new Sonata\AdminBundle\SonataAdminBundle(),
             // ...