Merge pull request #20 from cis3296s24/nina-perone-patch-1

Update README.md

README.md

@@ -6,7 +6,7 @@ Web application inspired by https://www.instagram.com/albumreceipts/. Generates
 
 The application inspired by https://receiptify.herokuapp.com/. Generates receipts on a website for a single user's spotify data.
 
-## Running the App Locally
+## Hosting the App Locally
 
 This app runs on Node.js. On [its website](http://www.nodejs.org/download/) you can find instructions on how to install it. You can also follow [this gist](https://gist.github.com/isaacs/579814) for a quick and easy way to install Node.js and npm.
 
@@ -23,23 +23,28 @@ To do so, go to [your Spotify for Developers Dashboard](https://beta.developer.s
 - http://localhost:3000 (needed for the implicit grant flow)
 - http://localhost:3000/callback
 
-Once you have created your app, load the `client_id`, `redirect_uri` and `client_secret` into a `config.js` file.
+Once you have created your app, change the `client_id` and `client_secret` values in the a `app.js` file to your own Spotify Developer credentials.
 
 In order to run the app, open the folder, and run its `app.js` file:
 
-    $ cd authorization_code
     $ node app.js
 
 Then, open `http://localhost:3000` in a browser.
 
-#### Hosting the App Locally
-
-To allow users to access your app, you need to add them into user managment from the Spotify for Developers Dashboard.
+To allow users to access your app, you need to add their names and emails under user managment from the Spotify for Developers Dashboard.
 
 When hosting, set the Redirect URI as:
 - http://[serverIP]:3000 (needed for implicit grant flow)
 - http://[serverIP]:3000/callback
 
 Setting Redirect URI as http://localhost:3000/callback when trying to host the application for local clients to connect to will fail because the redirect URI points to the client's IP address (localhost).
 
+## Joining the App Locally
+
+A user on the same network the app is hosted on can put the host's IP and port number into their browser (ex. 10.188.203.159:3000).
+
+The first person will click the "Create Session" button and log into their Spotify account. A Session ID will appear on the top of their receipt.
+
+Other users can then click "Join Session" and after entering the shared Session ID, they can log into their Spotify accounts and view the receipt.
+