fix(package): update react-scripts to version 3.2.0

Closes #19

Author: greenkeeper[bot]

examples/package.json

@@ -29,6 +29,6 @@
   "dependencies": {
     "react": "^16.1.1",
     "react-dom": "^16.1.1",
-    "react-scripts": "^2.0.3"
+    "react-scripts": "^3.2.0"
   }
 }