Jest example updated (#3123)

* jest example updated

* reverted changes on yarn.lock

examples/with-jest/package.json

@@ -1,16 +1,21 @@
 {
   "name": "with-jest",
   "version": "1.0.0",
+  "jest": {
+    "setupFiles": [
+      "<rootDir>/shim.js"
+    ]
+  },
   "dependencies": {
     "next": "latest",
-    "react": "^15.5.4",
-    "react-dom": "^15.5.4"
+    "react": "^16.0.0",
+    "react-dom": "^16.0.0"
   },
   "devDependencies": {
     "enzyme": "^2.8.2",
-    "jest": "^20.0.0",
-    "react-addons-test-utils": "^15.5.1",
-    "react-test-renderer": "^15.5.4"
+    "jest": "^21.0.0",
+    "react-addons-test-utils": "^15.6.0",
+    "react-test-renderer": "^16.0.0"
   },
   "scripts": {
     "test": "jest",
@@ -18,4 +23,4 @@
     "build": "next build",
     "start": "next start"
   }
-}
+}

examples/with-jest/shim.js

@@ -0,0 +1,3 @@
+global.requestAnimationFrame = callback => {
+  setTimeout(callback, 0)
+}