Increase bundle size substantially

[watadarkstar]

This library increases the bundle size substantially. There might be ways to optimize this such as using PNG compression:

https://tinypng.com/
https://www.npmjs.com/package/imageoptim-cli
https://imageoptim.com/mac

[jonsamp]

Also, since Metro bundler cannot shake out which flags you are/aren't using, this import here: https://github.com/frostney/react-native-flags/blob/master/index.js#L5 will import all flags even if you're using just one flag.