Simeon Akpanudo

I think using a callback for the `listenToOrientationChange` would be a better choice. And you seem to be re-writing most of the file. I guess it's your formatter. so consider...

 ![Fix listener in hooks by hoanglam10499 · Pull Request #70 · marudy_react-native-responsive-screen -...

I also looks like the library needs some maintenance too

I think having a `Calc` function that works like the CSS one, wil help