[json-glib] docs: Add release notes to the README

[Emmanuele Bassi <ebassi src gnome org>]

commit 27bb2c060a7b2ecc4839719d39b2044efe4c3e7a
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Sun Nov 29 12:46:27 2009 +0000

    docs: Add release notes to the README

 README |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index 1247451..2698af8 100644
--- a/README
+++ b/README
@@ -44,7 +44,6 @@ To build JSON-GLib just run:
 
 BUGS
 -------------------------------------------------------------------------------
-
 If you find a bug in JSON-GLib, please create a Bugzilla entry here:
 
   http://bugzilla.openedhand.com/enter_bug.cgi?product=json-glib
@@ -58,9 +57,18 @@ Attaching:
   â?¢ in case of a segmentation fault, a full stack trace with debugging
     symbols obtained through gdb is greatly appreaciated
 
-HACKING
+RELEASE NOTES
 -------------------------------------------------------------------------------
+â?¢ Prior to JSON-GLib 0.10, a JsonSerializable implementation could
+  automatically fall back to the default serialization code by simply
+  returning NULL from an overridden JsonSerializable::serialize_property()
+  virtual function. Since JSON-GLib 0.10 this is not possible any more. A
+  JsonSerializable is always expected to serialize and deserialize all
+  properties. JSON-GLib provides public API for the default implementation
+  in case the serialization code wants to fall back to that.
 
+HACKING
+-------------------------------------------------------------------------------
 JSON-GLib is developed mainly inside a GIT repository available at:
 
   http://git.gnome.org/cgit/json-glib