connect and useConnect

[juanmaguitar]

Review docs and check if this can be explained better

> the docs say it still needs the connect HOC, what's the point of useConnect then?
> Good question, I'm using it without the connect HOC and its working right. I guess its maybe an error in the docs.
> By using  useConnect() you can create your own hooks that make use of the frontity state, which would not be straightforward with just using connect :slight_smile: 
For example, we are going to release a useInfiniteScroll  hook which is using useConnect internally to access the frontity state!