Small README update.

README

@@ -59,7 +59,7 @@ The default mode is to output a JScript file which can be executed in Windows
 Scripting Host. However if you want a scriptlet pass either -m (for a scriptlet
 which can be used from a scriptlet moniker) or -u (for a scriptlet which can be
 used from regsvr32). You can also specify the '-l vba' switch to output a VBA 
-file which should work in Office Macros.
+file which should work in Office Macros or '-l vbscript' for VBScript.
 
 Finally by default the tool will output to stdout, you can output direct to a file
 using the -o switch.