Add @output for ftp-bounce.nse, thanks to Gutek.

scripts/ftp-bounce.nse

@@ -4,6 +4,12 @@ Checks to see if an FTP server allows port scanning using the FTP bounce method.
 author = "Marek Majkowski"
 license="Same as Nmap--See http://nmap.org/book/man-legal.html"
 
+---
+-- @output
+-- PORT   STATE SERVICE
+-- 21/tcp open  ftp
+-- |_ftp-bounce: bounce working!
+
 categories = {"default", "intrusive"}
 
 require "shortport"