Run npm install to install development dependencies. Use grunt watch to keep the examples folder in sync with the source file while developing, and then use grunt to make sure everything is neat and tidy when you're done.
See the example by running npm server.js. Specify a port other than the default of 8080 with npm server.js 9090.
The game's AI is a variable-depth minimax algorithm with alpha-beta pruning. The default depth setting is such that any human player should not be able to beat the AI; and that two AIs playing each other should always draw.
Gameplay is configurable: a human may play an AI, or two humans (or two AIs) may play each other. See the example for a demo.