Merge pull request #1076 from IntoWebDevelopment/5b7ef11-update

PdoSessionStorage - Symfony2.1

cookbook/configuration/pdo_session_storage.rst

@@ -14,6 +14,14 @@ Symfony2 has a built-in solution for database session storage called
 To use it, you just need to change some parameters in ``config.yml`` (or the
 configuration format of your choice):
 
+.. versionadded:: 2.1
+    In Symfony2.1 the class and namespace are slightly modified. You can now 
+    find the `PdoStorage` class in the `Session\\Storage` namespace. Full 
+    version below:
+
+    :class:`Symfony\\Component\\HttpFoundation\\Session\\Storage\\PdoStorage`.
+    Also note that you need to swap `%session.storage.options%` with `%pdo.db_options%`.
+
 .. configuration-block::
 
     .. code-block:: yaml