Add react-dom as a dependency

[0xpatrickdev]

When using docz with react-native, I don't think we should force people to install react-dom separately. This PR includes react-dom, similar to how react-art is included.

If the maintainers feel react-dom should be managed as a separate dependency, we should at least update this error message and document the dependency in the README.md:

I don't think react-dom/unstable-native-dependencies can be installed separately, I believe it's just a submodule of react-dom