Add google analytics plugin to vuepress

docs/.vuepress/config.js

@@ -6,7 +6,6 @@ module.exports = {
   title: 'GrapesJS',
   description: 'GrapesJS documentation',
   base: '/docs/',
-  ga: 'UA-74284223-1',
   serviceWorker: false, // Enable Service Worker for offline usage
   head: [
     ['link', { rel: 'icon', href: '/logo-icon.png' }],
@@ -106,4 +105,7 @@ module.exports = {
       ],
     }
   },
+  plugins: [
+    [ '@vuepress/google-analytics', { ga: 'UA-74284223-1' } ],
+  ],
 }

package-lock.json

@@ -1740,6 +1740,12 @@
         "lodash.debounce": "^4.0.8"
       }
     },
+    "@vuepress/plugin-google-analytics": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/@vuepress/plugin-google-analytics/-/plugin-google-analytics-1.4.1.tgz",
+      "integrity": "sha512-s43V5QHdTz0ayfy5vZrfMPpZzJBsj9L79TaxyMux1jOviS7oeWqkvNSblaHwP4Y8BxISehsKte8qsblQEN3zvQ==",
+      "dev": true
+    },
     "@vuepress/plugin-last-updated": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/@vuepress/plugin-last-updated/-/plugin-last-updated-1.4.1.tgz",

package.json

@@ -32,6 +32,7 @@
     "@babel/core": "^7.9.0",
     "@babel/plugin-transform-runtime": "^7.9.0",
     "@babel/preset-env": "^7.9.5",
+    "@vuepress/plugin-google-analytics": "^1.4.1",
     "babel-loader": "^8.1.0",
     "documentation": "^8.1.2",
     "eslint": "^6.6.0",