GD
0) git clone and install https://github.com/defcon-russia/metasploit-framework
1) Buy a domain. Shorter better. Like: msf.ws
2) get a hosting like EC2 (let's say IP will be 1.2.3.4)
3) put NS records to msf.ws to the IP of that server
4) Deploy DNS MSF Bridge to that server, run it
./dns_server.py --ipaddr 1.2.3.4 --domain msf.ws