Update React Docs to include correct usage instructions

[justintemps]

The usage instructions for React right now are incorrect. They need to be updated to include the changes introduced in 0.18.0

See below from Changelog.

e631a89: Introduced a new export system, which allows you to import components, hooks and styles from the library in a more convenient way.

• @ilo-org/react/styles is reserved for the exported styles

...
import "@ilo-org/react/styles/global.css";
import "@ilo-org/react/styles/index.css";

• @ilo-org/react exports all components and hooks

import { Loading, Button, useGlobalSettings } from "@ilo-org/react";