Update Storybook examples for react-scripts@2.0.0

[seniorquico]

The Storybook example project configuration files don't appear to work with the latest react-script@2 betas. Comparing my working project configuration to the webpack.config.js example configuration file, I have the following:

• Remove @babel/preset-state-0 preset
• Add @babel/plugin-proposal-class-properties plugin
• Remove polyfill: true from @babel/plugin-transform-runtime plugin configuration

Additionally, I think the webpack.config.monorepo.example.js configuration file should be removed now that the latest react-scripts@2 betas no longer support Yarn workspaces/Lerna monorepos.

[strothj]

Hello,

I'm going to close this issue because the features of this project will soon be in the Create React App package. I've created an issue with some information here: https://github.com/strothj/react-app-rewire-typescript-babel-preset/issues/30