$ npm install hero-your-friend
const heroYourFriend = require('hero-your-friend');
const batman = new heroYourFriend("Batman", "Mike");
console.log(batman.giveFive());
.greeting('HeroName', 'YourName');
.giveFive('HeroName', 'YourName');
.youNeedUs('HeroName', 'YourName');
.farewell('HeroName', 'YourName');