fix: Add peer dependencies

[DylanVann]

rc-util has a peerDependency:

  "peerDependencies": {
    "react": "^15.0.0 || ^16.0.0",
    "react-dom": "^15.0.0 || ^16.0.0"
  },

This package depends on rc-util so it must either have react and react-dom in dependencies or in peerDependencies.

Currently this prevents using Ant Design with Yarn Berry.

If this is accepted I will make this change to other rc-* repos.

[vercel]

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[coveralls]

Coverage remained the same at 82.78% when pulling e3a0d41 on DylanVann:add-peer into a1385aa on react-component:master.

[yoyo837]

Close by #116