update NEWS changelog

Refs #72274

Change-Id: Ice0fdfb3eb6fc247f3d3cd9bc52a019df99197cd

NEWS

+DRing (2.2.0) / 2015-05-01
+	* DBus API changes (additions from patches below)
+	* Contrib: use PJSIP 2.4 and gnutls 3.4 if not provided by system
+	* Contrib: minimal gnutls is 3.3.0
+	   => Users of 2.1.1 and below may have to recreate their Ring account
+	   and have a new RingID.
+	* Implemented CA storage (alpha stage)
+	* Better Window support
+	* Security: Implement TLS validator N, CN and O ldap fields
+	* sipaccount: credentials refactoring
+	* Media: implement media muting
+	* sip: add support for TLS1.1, TLS1.2
+	* sipaccount: fix NAT-overriden sips contact header
+	* pulseaudio: fix memory corruption
+	* sipaccount: fix pointer to deinitialised local variable
+	* daemon: re-register SIP account when credentials change
+	* gnutls: fix osx
+	* manager: merge managerimpl code in manager files
+	* fileutils: add isDirectory
+	* sipcall: add some call failure reasons
+	* sipcall: fix state transition
+	* daemon: clean usage of the AccountsChanged signal
+	* Various little improvements and deprecated API/code removal.
+
+DRing (2.1.1) / 2015-04-16
+	* missing NEWS update in 2.1.0
+	* Account: fix account details changes by using correct signal
+
+DRing (2.1.0) / 2015-04-14
+	* Contrib: update to latest OpenDHT
+	* Contrib: fix symbol conflict between uuid and upnp libraries
+	* Media: SHM video sink implements double-buffering for better IO performances
+	* Media: reorder AV codec default order (Opus/H264 first)
+	* Media: PulseAudio backend has echo cancelling by default
+	* Media: add rationnal number support for framerate
+	* RingAccount: use a random port at creation or if user force it to 0
+	* RingAccount: generate identity when saving account
+	* Account: fix disabled DHT usage to place a call
+	* API: introduce text messaging per account for non-RT communication
+	* Platform: introduce windows support
+	* Build: clang build error fixed
+	* Repo: removed INSTALL as auto-generated by autotools
+
 DRing (2.0.1) / 2015-03-27
 	* Add FPS calculation for streamed files
 	* Set defaults video bitrate to 800 Kb/s