tic-tac-toe in Emacs

I recently made tic-tac-toe game in Emacs.

In the video, I am showing a minor demo of me playing (against me) tic tac toe in Emacs.
The code is inspired from thoughtBot's Emacs meetup video.

The GitHub Repository for the same:
https://github.com/analyzeninvest/tic-tac-toe