Added new CHANGELOG.md with a few recent changes

Author: Lars Janssen

CHANGELOG.md

@@ -0,0 +1,9 @@
+Changelog
+=========
+
+* **2013-05-28**: [Bundle] Only include Doctrine PHPCR compiler pass if PHPCR-ODM is present
+* **2013-05-25**: [Bundle] Drop symfony_ from symfony_cmf prefix
+* **2013-05-24**: [Document] ContentRepository now requires ManagerRegistry in the constructor and provides `setManagerName()` in the same way as RouteProvider
+* **2013-05-24**: [Document] RouteProvider now requires ManagerRegistry in the constructor (the `cmf_routing.default_route_provider` does this for you)
+** To use a different document manager from the registry, call `setManagerName()` on the RouteProvider
+