Support for strings

[ReeceKenney]

First of all, thanks for this great package, it's very useful to me. I just had a quick suggestion that would be awesome to see:

I know this is 'react-native-number-please', but it would be great to have the ability to add strings as options. This would allow us to recreate the iOS time picker in which you can select AM/PM:

Maybe this could be achieved by allowing us to specify an array of values. If this array is not specified, it will fall back to the min/max approach it seems to be using at the moment?

[thebiltheory]

Good idea 💡