Example project: Upgrade dependencies

Author: karl-run

example/.env

@@ -0,0 +1,2 @@
+SKIP_PREFLIGHT_CHECK=true
+

example/package.json

@@ -5,17 +5,29 @@
   "license": "MIT",
   "private": true,
   "dependencies": {
-    "prop-types": "^15.6.2",
-    "react": "^16.4.1",
+    "prop-types": "^15.7.2",
+    "react": "^16.8.6",
     "react-bottom-scroll-listener": "link:..",
-    "react-dom": "^16.4.1",
-    "react-scripts": "^1.1.4",
+    "react-dom": "^16.8.6",
+    "react-scripts": "^3.0.1",
     "react-toggle": "^4.0.2"
   },
   "scripts": {
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
   }
 }