you can install package by npm install censorifyapplication
$ mkdir readwords && cd readwords
$ npm install censorifyapplication
$ vi readwords.js
var censor = require("censorify");
console.log(censor.getCensoredWords());
console.log(censor.censor("Some very sad, bad and mad text."));
censor.addCensoredWord("gloomy");
console.log(censor.getCensoredWords());
console.log(censor.censor("A very gloomy day."));
hit on keyboard "esc"
then
:wq
save and exit from vi
$ node readwords.js