Mention that we don't provide support either

Author: javiereguiluz

README.md

@@ -7,9 +7,9 @@ Docs repository.
 
 This project is considered **an internal tool** and therefore, you
 **shouldn't use this project in your application**. Unlike the rest of the
-Symfony projects, this repository doesn't guarantee backward compatibility.
-Any or the entire project can change, or even disappear, at any moment without
-prior notice.
+Symfony projects, this repository doesn't provide any support and it doesn't
+guarantee backward compatibility either. Any or the entire project can change,
+or even disappear, at any moment without prior notice.
 
 If you are looking for a project to build your reStructuredText documentation
 in PHP, use [Doctrine RST parser][2] (which is also used by this project internally).