The project uses a Java Web Server and an OS X Client that run on your Mac. It monitor's the chat.db file used by the OS X Messages application for new messages, then relays those messages to an Android app.
Chee has released a video of the project in action and has posted the code on GitHub.
"This project is a super alpha prototype. I am releasing it because I need your help. :)"
Take a look at the video below and hit the link to visit its Github page!