Merge pull request #403 from dant89/patch-1

Update index.rst adding project_dir to the first migration_path example

Author: greg0ire

Resources/doc/index.rst

@@ -45,7 +45,7 @@ application:
     doctrine_migrations:
         # List of namespace/path pairs to search for migrations, at least one required
         migrations_paths:
-            'App\Migrations': 'src/App'
+            'App\Migrations': '%kernel.project_dir%/src/App'
             'AnotherApp\Migrations': '/path/to/other/migrations'
             'SomeBundle\Migrations': '@SomeBundle/Migrations'