The easiest (and free) option would be to use the Bit.ly service. Here's a help topic which explains what it is and how to set it up.
https://bitly.com/pages/help#i_6_0
The process is pretty easy.
1. Search for the short URL of your choice.
2. Follow the instructions and change the nameservers for your domain to Bit.ly's.
3. Follow the mapping directions at https://bitly.com/a/account
It's that simple. But if you need help, hit me up on the contact page. We'd be happy to do this for you.
Head of the monster tribe. Lead family gardener.