message: Update Getting Started docs w/ a little more detail
  The two webpack plugins did not quite have the right names
  I added the npm install command for the copy plugin
  I added the import lines to the top of the webpack config file
diff: @@ -68,16 +68,21 @@ yarn run storybook
  ## Getting Started
  -### Typical env: webpack + html-webpack-plugin
  +### Typical env: webpack + copy-webpack-plugin + html-webpack-include-assets-plugin
  ```bash
  npm i cesium cesium-react --save
  -npm i html-include-assets-plugin --save-dev
  +npm i copy-webpack-plugin --save-dev
  +npm i html-webpack-include-assets-plugin --save-dev
  ```
  webpack.config.js:
  ```js
  +
  +const CopyWebpackPlugin = require('copy-webpack-plugin');
  +const HtmlWebpackIncludeAssetsPlugin = require('html-webpack-include-assets-plugin');
  +
  module.exports = {
  externals: {
  cesium: "Cesium"
  @@ -87,13 +92,13 @@ module.exports = {
  // ...
  },
  plugins: {
  - new CopyPlugin([
  + new CopyWebpackPlugin([
  {
  from: `node_modules/cesium/Build/Cesium${prod ? "" : "Unminified"}`,
  to: "cesium"
  }
  ]),
  - new HtmlIncludeAssetsPlugin({
  + new HtmlWebpackIncludeAssetsPlugin({
  append: false,
  assets: [
  "cesium/Widgets/widgets.css",
  