updated README file

README.md

@@ -5,24 +5,30 @@
 The Spotify Remote Controller is an ESP32 project that allows you to control your Spotify playback using a custom hardware interface. It features an AMOLED display, WiFi connectivity, and integration with the Spotify API to fetch and display track information, playlists, and devices.
 
 ## Tokens
+
 The app is working with Spotify OAuth, which means you need to:
+
 - Create a new app through: `https://developer.spotify.com/dashboard`
+- Set the callback URI to `http://localhost`
 - Go to app settings, copy `ClientID` and `ClientSecret`
 - Paste them into `Spotif.ino`
-- Go to `https://accounts.spotify.com/authorize?client_id=<ClientID>&response_type=code&redirect_uri=http://localhost:5137&scope=user-read-playback-state%20user-modify-playback-state`
+- Go to `https://accounts.spotify.com/authorize?client_id=<ClientID>&response_type=code&redirect_uri=http://localhost&scope=user-read-playback-state%20user-modify-playback-state`
 - Copy the code from the URL
-- Use Postman to make a call to `https://accounts.spotify.com/api/token` with the following body:
+- Use Postman or Insomnia to make a call to `https://accounts.spotify.com/api/token` with the header `Content-type: application/x-www-form-urlencoded` and following body:
+
 ```
 {
     "grant_type": "authorization_code",
     "code": "<code>",
-    "redirect_uri": "http://localhost:5137",
+    "redirect_uri": "http://localhost",
     "client_id": "<ClientID>",
     "client_secret": "<ClientSecret>"
 }
 ```
+
 - Copy the `access_token` and `refresh_token` from the response
 - Paste it into `Spotif.ino`
 
 ## Contributing
-Contributions are welcome! Please fork the repository and submit a pull request with your changes.
+
+Contributions are welcome! Please fork the repository and submit a pull request with your changes.