Wrote Scalable Theme module for React Native

Hello everyone,

In entire app, colors, typography and values for margin/padding/height/width are typically defined in each component, which makes it hard to change. Theme module, defines all colors, typography and sizes at a single place, so that only few changes in value can change the overall look of the app.

Wrote a project on Github regarding this https://github.com/alexakasanjeev/react-native-theme

Please checkout the project, and share your ideas on How it could be improve, contribution are welcomes.