Trying to follow the basic example is failing due to multiple react versions

[Barak Drechsler]

Trying to follow the basic example is failing due to multiple react versions.

The reason is that create react app already uses React 17, while repluggable directly depends on react 16.
I suggest changing react to be a peer dependency + dev dependency, instead of direct dependency.

[Itay Shtekel]

Resolved by #150