Missing react@* in peerDependencies
Using Yarn 2.0 release candidate I get the following error:

`➤ YN0002: │ react-color@npm:2.17.3 doesn't provide react@* requested by @icons/material@npm:0.2.4`

![image](https://user-images.githubusercontent.com/6063705/69462121-7f3a8680-0d78-11ea-8f72-49761df487b8.png)

Seeing as react-color has a dependency on `@icons/material`, it is also responsible for in some way providing it's peer dependencies, in this case `react`. This is strictly enforced in Yarn Plug'n'Play which will be default in Yarn 2.0.