Caesar-s-Cipher 
============================================================== Node module to encode string. A small library that encodes string by shifting characters in a string.
Installation
npm install @awdesh/caesar-cipher
Usage
var cipher = require('@awdesh/caesar-cipher');
var encodedStr = cipher('SERR');
Output should be FREE
Tests
npm test
Contributing
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.