A small library that adds commas to numbers
`npm install tieng-viet-to-tieq-viet`
var numFormatter = require('tieng-viet-to-tieq-viet');
var formattedNum = numFormatter(35666);
Output should be 35,666
`npm test`
In lieu of a formal style guide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code.