Fixed typo in README

Author: tompedals

README.md

@@ -124,7 +124,7 @@ The file driver needs to know what directory it should use for storing messages
 
 ``` yaml
 bernard_bernard:
-    doctrine: file
+    driver: file
     options:
         directory: %kernel.cache_dir%/bernard
 ```
@@ -145,4 +145,4 @@ bernard_bernard:
 ```
 
 If you're using the [SncRedisBundle](https://github.com/snc/SncRedisBundle) you have to set logging to false for the
-bernhard client to ensure that is is a ``Redis`` instance and not wrapped.
+bernhard client to ensure that is is a ``Redis`` instance and not wrapped.