Update cowpatty.md

tools/cowpatty.md

@@ -9,6 +9,20 @@ Many enterprise networks deploy PSK-based authentication mechanisms for WPA/WPA2
 Help Text
 -------
 ```
+cowpatty 4.6 - WPA-PSK dictionary attack. <jwright@hasborg.com>
+cowpatty: Must supply a pcap file with -r
+
+Usage: cowpatty [options]
+
+	-f 	Dictionary file
+	-d 	Hash file (genpmk)
+	-r 	Packet capture file
+	-s 	Network SSID (enclose in quotes if SSID includes spaces)
+	-c 	Check for valid 4-way frames, does not crack
+	-h 	Print this help information and exit
+	-v 	Print verbose information (more -v for more verbosity)
+	-V 	Print program version and exit
+
 
 ```