Provided Node version in package.json, updated README

Author: gitdagray

README.md

@@ -5,12 +5,13 @@
 [<img src="https://cdn.gomix.com/2bdfb3f8-05ef-4035-a06e-2043962a3a13%2Fremix-button.svg" width="163px" />](https://glitch.com/edit/#!/import/github/gitdagray/mongo_async_crud)
 
 **Deploy by clicking the button above**
+_Remember to add your .env variables in the deployed version_
 
 **Description:**
 
 This repository shares the code applied during the Youtube tutorial. The tutorial is part of a [Node.js & Express for Beginners Playlist](https://www.youtube.com/playlist?list=PL0Zuz27SZ-6PFkIxaJ6Xx_X46avTM1aYw) on my channel.  
 
-[YouTube Tutorial]() for this repository.
+[YouTube Tutorial](https://youtu.be/AWlLhRQJvtw) for this repository.
 
 I suggest completing my [8 hour JavaScript course tutorial video](https://youtu.be/EfAl9bwzVZk) if you are new to Javascript.
 

package.json

@@ -9,6 +9,9 @@
   },
   "author": "Dave Gray",
   "license": "ISC",
+  "engines": {
+    "node": "14.x"
+  },
   "dependencies": {
     "bcrypt": "^5.0.1",
     "cookie-parser": "^1.4.5",