Add Sergey Tamkovich to CREDITS. Thank you for your contributions!

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@100021 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CREDITS

@@ -183,6 +183,12 @@ Brett Bryant - digit option for musiconhold selection, ENUMQUERY and ENUMRESULT
 	TCP and TLS support for SIP, and various bug fixes.
 	brettbryant(AT)gmail.com
 
+Sergey Tamkovich - Realtime support for MusicOnHold, store and destroy realtime methods and
+	implementations for odbc, sqlite, and pgsql realtime drivers, attended transfer updates,
+	multiple speeds for ControlPlayback, and multiple bug fixes
+	- See http://voip-info.org/users/view/sergee
+	serg(AT)voipsolutions.ru
+
 === OTHER CONTRIBUTIONS ===
 John Todd - Monkey sounds and associated teletorture prompt
 Michael Jerris - bug marshaling