message: chore(google analytics): add ga
diff: @@ -10,6 +10,15 @@ module.exports = {
  base: '/docs/',
  publicPath: '/docs/',
  cache: false,
  + head: [
  + ['script', { src: 'https://www.googletagmanager.com/gtag/js?id=G-7E85TW7P27' }],
  + ['script', { type: 'text/javascript' }, `
  + window.dataLayer = window.dataLayer || [];
  + function gtag(){dataLayer.push(arguments);}
  + gtag('js', new Date());
  + gtag('config', 'G-7E85TW7P27');
  + `]
  + ],
  locales: {
  '/en-US/': {
  lang: 'en-US',
  