update: add section to readme

README.md

 # PROG2900
 
 ## Database setup
-This project requires the use of MongoDB. To use the application a database must first be set up and configured. The following is a step by step guide of how to set up the database:
+This project requires the use of MongoDB. To use the application, a MongoDB Atlas database must first be set up and configured. The following is a step by step guide of how to set up the database:
 1. Create a user/Log into MongoDB Atlas (https://www.mongodb.com/atlas)
 2. ?Create an organization?
 3. On the left-hand side in the menu under "Organization", press the "Project" tab.
@@ -38,4 +38,6 @@ This project requires the use of MongoDB. To use the application a database must
 
 ![Alt text](images/image-10.png)
 
-11. You have now created a database deployment, but you will still have to configure the connection to the database. 
\ No newline at end of file
+11. You have now created a database deployment, but you will still have to configure the connection to the database. 
+
+### Database connection