====== React Native ======

  * react native is designed from web oriented reactJS, and aiming for mobile platform, and then expanded to use for desktop platform.

Install:
  * install node.js first (which will also auto install python 3 and build tools)

====== Nodejs library ======

**Expo**
  * make any app run it everywhere
  * https://expo.io/

**Express**
  * minimalist web framework for node.js
  * https://expressjs.com/