- add more comments

git-svn-id: http://bigbluebutton.googlecode.com/svn/trunk@3447 af16638f-c34d-0410-8cfa-b39d5352b314

bbb-voice-conference/config/asterisk/bbb_extensions.conf

+; BigBlueButton extensions.
+; In your /etc/asterisk/extensions.conf, add the following line at the end
+; of the file
+; #include "bbb_extensions.conf"
 ;
 ; BigBlueButton: Setup sample conference
 [bigbluebutton]
@@ -16,9 +20,6 @@ exten => s,n,Goto(bbb-conference,${CONF_NUM},1)
 
 ; No need to check if conference is valid as they won't be able to login
 ; if the conference is invalid.
-; 
-; Note: We've commented out the checks for a valid conference until we've finished
-; updating the API for 0.63.  These checks will be restored before 0.63 is released.
 ;
 [bbb-voip]
 exten => _XXXX.,1,Playback(conf-placeintoconf)