Create detect_kippo.rb - Detect Kippo SSH Honeypots

First contribution to Metasploit. probably sucks, feel free to make suggestions, etc.
yup. lots of janky behavior.

```
vagrant@precise64:~/kippo$ printf "\n\n\n\n\n\n\n\n" | nc -v 127.0.0.1 2222
Connection to 127.0.0.1 2222 port [tcp/*] succeeded!
SSH-2.0-OpenSSH_5.1p1 Debian-5
Protocol mismatch.
vagrant@precise64:~/kippo$ printf "\n\n\n\n\n\n\n\n" | nc -v myserver.com 22
Connection to myserver.com 22 port [tcp/ssh] succeeded!
vagrant@precise64:~/kippo$
```

So I'll rewrite and take HD's idea and just shove the banner back at it. A regular SSH server handles it like this:

```
vagrant@precise64:~/kippo$ nc -v myserver.com 22
Connection to myserver.com 22 port [tcp/ssh] succeeded!
SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
l
`??ǖ f???s??curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1/ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519?aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se?aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se?hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96?hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96none,zlib@openssh.comnone,zlib@openssh.com
```
time to rewrite this module