Create detect_kippo.rb - Detect Kippo SSH Honeypots

First contribution to Metasploit. probably sucks, feel free to make suggestions, etc.
Also, take a look at this:

```
wvu@kharak:~/kippo:master$ nc localhost 22
SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2

Protocol mismatch.
wvu@kharak:~/kippo:master$ nc localhost 2222
SSH-2.0-OpenSSH_5.1p1 Debian-5








Protocol mismatch.
wvu@kharak:~/kippo:master$ 
```