Merge pull request #39 from stof/extension_deprecation

Remove usage of the deprecated base extension from HttpKernel

src/DependencyInjection/KeenIOExtension.php

@@ -3,9 +3,9 @@
 namespace KeenIO\Bundle\KeenIOBundle\DependencyInjection;
 
 use Symfony\Component\DependencyInjection\Alias;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 
 /**
  * @final