Update CHANGES and bump version

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

CHANGES

@@ -1,3 +1,7 @@
+3.3.1 2016-09-20
+- Add global hotkey support
+- Bug fixes and improvements
+
 3.3 2016-09-09
 - Update Privoxy to 3.0.26
 - Change minimum system version explicitly to Windows Vista

shadowsocks-csharp/Controller/Service/UpdateChecker.cs

@@ -23,7 +23,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionLocalName;
         public event EventHandler CheckUpdateCompleted;
 
-        public const string Version = "3.3";
+        public const string Version = "3.3.1";
 
         private class CheckUpdateTimer : System.Timers.Timer
         {