Cleanup webpack example configs (#606)

* Remove Buffer/process plugins

* Adjust

* Cleanup README

packages/vue-identicon/src/Demo.ts

@@ -1,40 +0,0 @@
-// Copyright 2017-2022 @polkadot/vue-identicon authors & contributors
-// SPDX-License-Identifier: Apache-2.0
-
-import Vue, { VNode } from 'vue';
-
-import Identicon from './index';
-
-interface Data {
-  address: string;
-  size: number;
-}
-
-/**
- * @name Demo
- * @description Demo component
- */
-const Demo = Vue.extend({
-  components: {
-    Identicon
-  },
-  data: function (): Data {
-    return {
-      address: '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
-      size: 128
-    };
-  },
-  name: 'Demo',
-  template: `
-    <div id="demo">
-      <Identicon :size="size" :theme="'polkadot'" :value="address" />
-      <Identicon :size="size" :theme="'substrate'" :value="address" />
-      <Identicon :size="size" :theme="'beachball'" :value="address" />
-      <Identicon :size="size" :theme="'empty'" />
-    </div>
-  `
-});
-
-new Vue({
-  render: (h): VNode => h(Demo)
-}).$mount('#demo');

packages/vue-identicon/webpack.config.js

@@ -1,50 +0,0 @@
-// Copyright 2017-2022 @polkadot/react-identicon authors & contributors
-// SPDX-License-Identifier: Apache-2.0
-
-const path = require('path');
-const VueLoaderPlugin = require('vue-loader/lib/plugin');
-const webpack = require('webpack');
-const ENV = process.env.NODE_ENV || 'development';
-const isProd = ENV === 'production';
-
-module.exports = {
-  context: __dirname,
-  devtool: isProd ? 'source-map' : 'eval-cheap-source-map',
-  entry: './src/Demo.ts',
-  mode: ENV,
-  module: {
-    rules: [
-      {
-        exclude: /(node_modules)/,
-        test: /\.(js|ts)$/,
-        use: [
-          'babel-loader'
-        ]
-      },
-      {
-        loader: 'vue-loader',
-        test: /\.vue$/
-      }
-    ]
-  },
-  output: {
-    filename: './demo.js',
-    path: path.join(__dirname, 'build')
-  },
-  plugins: [
-    new VueLoaderPlugin(),
-    new webpack.ProvidePlugin({
-      Buffer: ['buffer', 'Buffer']
-    }),
-    new webpack.ProvidePlugin({
-      process: 'process/browser'
-    })
-  ],
-  resolve: {
-    alias: {
-      '@polkadot/ui-shared': path.resolve(__dirname, '../ui-shared/build'),
-      'process/browser': require.resolve('process/browser')
-    },
-    extensions: ['.js', '.ts']
-  }
-};