Support for Void Function Components

[marcohamersma]

Hi there,
I've been trying to implement this in our app, and so far so good, but I noticed that the library doesn't support void function components. It's mostly a semantic/type difference.

I saw the REACT_FC_NAMES const in the code, which made it seem as easy as adding VFC to make this functionality work.

I'd make a PR, but I was wondering if this all that needs to be done to add support for VFCs, or is there something more to consider (regarding children, for example)?

[milesj]

Not opposed. PRs are welcome!