Add a note regarding user flags

Author: mkoppanen

ChangeLog

@@ -20,6 +20,7 @@ Version 2.2.0b1
 	* Added Memcached::setBucket for virtual bucket support
 	* Added support for msgpack serialization
 	* Memcached::setSaslAuthData returns correct status on success
+    * Added support for user-defined flags in set and get operations
 
 Version 2.1.0
 -------------

package.xml

@@ -50,6 +50,7 @@ http://pear.php.net/dtd/package-2.0.xsd">
 - Added Memcached::setBucket for virtual bucket support
 - Added support for msgpack serialization
 - Memcached::setSaslAuthData returns correct status on success
+- Added support for user-defined flags in set and get operations
  </notes>
  <contents>
   <dir name="/">