Create detect_kippo.rb - Detect Kippo SSH Honeypots

First contribution to Metasploit. probably sucks, feel free to make suggestions, etc.
```
wvu@kharak:~/kippo:master$ nc localhost 2222 <<<$'\n\n\n\n\n\n\n'
SSH-2.0-OpenSSH_5.1p1 Debian-5
Protocol mismatch.
wvu@kharak:~/kippo:master$ wc -l <<<!$
wc -l <<<$'\n\n\n\n\n\n\n'
8
wvu@kharak:~/kippo:master$ 
```

WELP.