Breaks Storyshots about storybook-addon-material-ui

[hgulino]

I came across this issue and decided to drop the use of the addon altogether since I'm comfortable creating my own Storybook Addon Decorators. By removing the storybook-addon-material-ui and adding the following, I was able to mimic the necessary styles for my project.

My config:

import React from 'react';
import { CssBaseline } from '@material-ui/core';
import { MuiThemeProvider } from '@material-ui/core/styles';
import MuiTheme from '../app/theme';
import { configure, addParameters, addDecorator } from '@storybook/react';

const MuiDecorator = storyFn => (
  <MuiThemeProvider theme={MuiTheme}>
    <CssBaseline />
    {storyFn()}
  </MuiThemeProvider>
);
addDecorator(MuiDecorator);

const req = require.context('../app', true, /\.stories\.(js)$/);

function loadStories() {
  req.keys().forEach(filename => req(filename));
}

configure(loadStories, module);