fixed prop types

[mjforan]

JavaScript doesn't have separate integer and float types, just "number". You can see the available prop types here. This was causing the console to display Warning: Failed prop type: ReactNipple: prop type `options.size` is invalid; it must be a function, usually from the `prop-types` package, but received `undefined`.

[jasonmcleod]

Stoked to see this fix. Hoping it will get merged 🤞

Thanks @mjforan

[mjforan]

Looks like this repo is dead. New npm package here, with the prop types fix: https://www.npmjs.com/package/@mjforan/react-nipple