✨ Add umd module gereation for npm package

Signed-off-by: Jakub Juszczak <netghost03@gmail.com>

config/index.js

@@ -4,21 +4,18 @@ var path = require('path')
 module.exports = {
   build: {
     env: require('./prod.env'),
-    index: path.resolve(__dirname, '../dist/index.html'),
     assetsRoot: path.resolve(__dirname, '../dist'),
-    assetsSubDirectory: 'static',
+    assetsSubDirectory: '',
     assetsPublicPath: '/',
     productionSourceMap: true,
-    // Gzip off by default as many popular static hosts such as
-    // Surge or Netlify already gzip all static assets for you.
-    // Before setting to `true`, make sure to:
-    // npm install --save-dev compression-webpack-plugin
-    productionGzip: false,
-    productionGzipExtensions: ['js', 'css']
   },
   dev: {
     env: require('./dev.env'),
     port: 8080,
     proxyTable: {}
+  },
+  umd: {
+    assetsRoot: path.resolve(__dirname, '../umd'),
+    assetsPublicPath: '/'
   }
 }