Added nodemon

Author: chen-robert

package.json

@@ -6,7 +6,8 @@
   "private": true,
   "scripts": {
     "lint": "standard",
-    "start": "node index.js"
+    "start": "node index.js",
+    "dev": "nodemon index.js"
   },
   "husky": {
     "hooks": {
@@ -20,6 +21,7 @@
   },
   "devDependencies": {
     "husky": "^4.2.1",
+    "nodemon": "^2.0.2",
     "standard": "^14.3.1"
   },
   "description": "rctf is RedpwnCTF's CTF platform. It is developed and maintained by the [redpwn](https://redpwn.net) CTF team.",