Add #[wasm_bindgen(start)], plugins to webpack config, Update deps

examples/todomvc/webpack.config.js

@@ -1,4 +1,6 @@
 const path = require('path');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+const webpack = require('webpack');
 
 module.exports = {
     entry: './index.js',
@@ -6,5 +8,16 @@ module.exports = {
         path: path.resolve(__dirname, 'dist'),
         filename: 'index.js',
     },
+    plugins: [
+        new HtmlWebpackPlugin({
+            template: "index.html"
+        }),
+        // Have this example work in Edge which doesn't ship `TextEncoder` or
+        // `TextDecoder` at this time.
+        new webpack.ProvidePlugin({
+          TextDecoder: ['text-encoding', 'TextDecoder'],
+          TextEncoder: ['text-encoding', 'TextEncoder']
+        })
+    ],
     mode: 'development'
 };