Update mongoose version and updated readme

Author: kdhttps

README.md

@@ -5,9 +5,9 @@ Simple node js api project with jwt authentication with mongodb.
 
 This is assumed that npm, node and mongodb are installed on the machine.
 
- * node js >= 8.x
- * npm >= 5.x
- * mongodb >= 3.2.x
+ * node js >= 10.x.x
+ * npm >= 6.x.x
+ * mongodb >= 4.2.x
 
 For installing node and npm please refer [here](https://nodejs.org/en/download/package-manager/).
 For installing mongodb [here](https://docs.mongodb.com/manual/installation/).

package.json

@@ -40,7 +40,7 @@
     "http-status": "^1.0.1",
     "https": "^1.0.0",
     "jsonwebtoken": "^8.0.1",
-    "mongoose": "^5.7.7",
+    "mongoose": "^5.9.2",
     "morgan": "^1.8.2",
     "path": "^0.12.7",
     "randomstring": "^1.1.5",

src/index.js

@@ -12,7 +12,7 @@ const server = require('http').Server(app);
 
 // MongoDB connection configuration
 mongoose.Promise = global.Promise;
-mongoose.connect(process.env.DB_URL, {useMongoClient: true}, (err, res) => {
+mongoose.connect(process.env.DB_URL, {useUnifiedTopology: true,  useNewUrlParser: true}, (err, res) => {
   if (err)
     console.log(`err connecting to db on ${process.env.DB_URL}, err: ${err}`);
   else