Added react and react-dom dependencies (#2518)

* Added react and react-dom dependencies

Added missing `react` and `react-dom` dependencies which are required by next.js

* Moved react & react-dom to dependencies

Moved react & react-dom to dependencies from devDependencies

examples/with-typescript/package.json

@@ -5,7 +5,9 @@
     "dev": "concurrently \"tsc --watch\" next"
   },
   "dependencies": {
-    "next": "latest"
+    "next": "latest",
+    "react": "^15.5.4",
+    "react-dom": "^15.5.4"
   },
   "devDependencies": {
     "@types/react": "^15.0.1",