This file is just meant for making design stuff easier in React-Native not React.js
The concept of this file is same as bootstrap in html for css stuff so you just have to look at what kind of style you want for your
<View>{/*or*/}<Text>
and use it there and All Set ;D
It's Open for Contribution so you can try contributing in it to make developers life more easy cuz i learnt alot from peoples and communities just initiating this project for my dear developers