chore(package): update react-scripts to version 2.1.4

Closes #14

Author: greenkeeper[bot]

package.json

@@ -87,7 +87,7 @@
     "react": "^16.4.1",
     "react-dom": "^16.4.1",
     "react-router-dom": "^4.3.1",
-    "react-scripts": "1.1.4",
+    "react-scripts": "2.1.4",
     "react-test-renderer": "^16.6.0",
     "rollup": "^0.67.4",
     "rollup-plugin-babel": "^4.0.3",