Update react-scripts version

Author: tyroprogrammer

package.json

@@ -16,7 +16,7 @@
     "react-markdown": "^4.0.6",
     "react-router": "^4.3.1",
     "react-router-dom": "^4.3.1",
-    "react-scripts": "2.1.3",
+    "react-scripts": "^2.1.5",
     "styled-components": "^4.1.3"
   },
   "scripts": {