Updated README file with the new branch

wouterj · wouterj · commit e30823309d69 · 2012-10-14T20:34:25.000+03:00
There is a new `2.1` branch for some months now, we should update the README file to include this branch (and new features).
diff --git a/README.markdown b/README.markdown
@@ -7,8 +7,9 @@ Contributing
 ------------
 
 >**Note** 
->Unless you're documenting a feature that's new to Symfony 2.1, all pull
->requests must be based off of the **2.0** branch, **not** the master branch.
+>Unless you're documenting a feature that's new to a subversion of Symfony 2, 
+>all pull requests must be based off of the **2.0** branch, **not** the master
+>or 2.1 branch.
 
 We love contributors! For more information on how you can contribute to the
 Symfony documentation, please read [Contributing to the Documentation](http://symfony.com/doc/current/contributing/documentation/overview.html) 
