pug template is using popular code example

Example 1: what is pug template engine

Pug is a template engine for Node and for the browser. 
It compiles to HTML and has a simplified syntax, which 
can make you more productive and your code more readable.
Pug makes it easy both to write reusable HTML, as well as
to render data pulled from a database or API.

Example 2: pug template

$ npm install pug --save