Markov-strings + say module.
These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.
You will need node.js installed (and these node.js modules if you only copy html and js file).
npm install --save markov-strings
npm install say
Copy the index.js and data.html and install the necessary modules or clone the complete directory and open up the console, to start type:
node index.js
Open up your browser and go to http://localhost:8080/