add missing kLibUSBMuxVersion to plist messages
diff --git a/src/libusbmuxd.c b/src/libusbmuxd.c
index 941ddc0..a39a099 100644
--- a/src/libusbmuxd.c
+++ b/src/libusbmuxd.c
@@ -63,6 +63,7 @@
 #define PLIST_BUNDLE_ID "com.marcansoft.usbmuxd"
 #define PLIST_CLIENT_VERSION_STRING "usbmuxd built for freedom"
 #define PLIST_PROGNAME "libusbmuxd"
+#define PLIST_LIBUSBMUX_VERSION 3
 #endif
 
 // usbmuxd public interface
@@ -341,6 +342,7 @@
 	plist_dict_insert_item(plist, "ClientVersionString", plist_new_string(PLIST_CLIENT_VERSION_STRING));
 	plist_dict_insert_item(plist, "MessageType", plist_new_string(message_type));
 	plist_dict_insert_item(plist, "ProgName", plist_new_string(PLIST_PROGNAME));	
+	plist_dict_insert_item(plist, "kLibUSBMuxVersion", plist_new_uint(PLIST_LIBUSBMUX_VERSION));
 	return plist;
 }
 #endif