feat(CRA): Updated CRA to v2 and resolved resulting issues.

Updated CRA to v2 and resolved resulting issues.

Author: AaronCoplan

example/package.json

@@ -13,7 +13,7 @@
     "react-dom": "^16.2.0",
     "react-google-maps": "^9.4.5",
     "react-router-dom": "^4.3.1",
-    "react-scripts": "^1.1.1",
+    "react-scripts": "^2.0.3",
     "react-simple-maps": "^0.12.0",
     "react-syntax-highlighter": "^8.0.1",
     "tabler-react": "link:.."
@@ -27,5 +27,11 @@
     "predeploy": "npm run build",
     "deploy": "gh-pages -d build"
   },
-  "devDependencies": {}
+  "devDependencies": {},
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
 }