app: Include analytics.

app/gatsby-config.js

@@ -35,6 +35,12 @@ module.exports = {
         path: `./src/data/`,
       },
     },
-    `gatsby-plugin-postcss`
+    `gatsby-plugin-postcss`,
+    {
+      resolve: `gatsby-plugin-google-analytics`,
+      options: {
+        trackingId: "UA-139957969-2",
+      }
+    }
   ],
 }

app/package-lock.json

@@ -10562,6 +10562,30 @@
         }
       }
     },
+    "gatsby-plugin-google-analytics": {
+      "version": "2.3.14",
+      "resolved": "https://registry.npmjs.org/gatsby-plugin-google-analytics/-/gatsby-plugin-google-analytics-2.3.14.tgz",
+      "integrity": "sha512-KgOIRbIULeMMyGBCY5WQVOM1AmB/1HgY1ypH1UZYxS15riTO6WSTfp+5hcxCS75Xc/6HgAOjZlNibCH02Tz1mQ==",
+      "requires": {
+        "@babel/runtime": "^7.11.2",
+        "minimatch": "3.0.4"
+      },
+      "dependencies": {
+        "@babel/runtime": {
+          "version": "7.11.2",
+          "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.11.2.tgz",
+          "integrity": "sha512-TeWkU52so0mPtDcaCTxNBI/IHiz0pZgr8VEFqXFtZWpYD08ZB6FaSwVAS8MKRQAP3bYKiVjwysOJgMFY28o6Tw==",
+          "requires": {
+            "regenerator-runtime": "^0.13.4"
+          }
+        },
+        "regenerator-runtime": {
+          "version": "0.13.7",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz",
+          "integrity": "sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew=="
+        }
+      }
+    },
     "gatsby-plugin-manifest": {
       "version": "2.2.21",
       "resolved": "https://registry.npmjs.org/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.21.tgz",

app/package.json

@@ -8,6 +8,7 @@
     "bootstrap": "^4.5.2",
     "gatsby": "^2.23.0",
     "gatsby-image": "^2.2.27",
+    "gatsby-plugin-google-analytics": "^2.3.14",
     "gatsby-plugin-manifest": "^2.2.21",
     "gatsby-plugin-offline": "^3.0.14",
     "gatsby-plugin-postcss": "^2.1.11",