Improve custom-logger README

Author: sunofcoder

examples/custom-logger/README.md

@@ -1,16 +1,56 @@
 # custom-logger
-custom-logger is an example of how the Pion API provides an customizable
-logging API. By default all Pion projects log to stdout, but we also allow
-users to override this and process messages however they want.
 
-## Instructions
-### Download custom-logger
+`custom-logger` is an example demonstrating how to override the default logging behavior of the [Pion WebRTC](https://github.com/pion/webrtc) stack.  
+By default, Pion logs everything to `stdout`.  
+This example shows how to inject a **custom `LoggerFactory`** to handle logs from every subsystem (ICE, DTLS, SCTP, DataChannel...).
+
+---
+
+##  Features
+
+- Creates a **custom logger** that implements `logging.LeveledLogger`.
+- Initializes two peer connections (`offerer` and `answerer`) locally.
+- Establishes a WebRTC connection between them.
+- Logs events from:
+    - `ICE` candidate gathering
+    - `DTLS` handshake
+    - `SCTP` and `DataChannel` setup
+- Prints logs with clear prefixes like `customLogger Debug:`.
+
+Ideal for:
+- Integrate with external monitoring systems
+- Store logs to files or databases
+- Debug complex WebRTC flows in a structured way
+
+---
+
+##  How to run
+
+### 1. Install the example
+
 ```
 go install github.com/pion/webrtc/v4/examples/custom-logger@latest
 ```
+Make sure  ```$(go env GOPATH)/bin ```  is in your ```PATH```.
 
-### Run custom-logger
-`custom-logger`
+You can add it to your PATH like this (zsh):
+
+```
+echo 'export PATH="$PATH:$(go env GOPATH)/bin"' >> ~/.zshrc
+source ~/.zshrc
+```
+### 2.Run
+`custom-logger` or  `go run main.go`
+
+##  Example output 
+
+```
+Creating logger for ice
+Creating logger for dtls
+Peer Connection State has changed: connected (answerer)
+Peer Connection State has changed: connected (offerer)
+customLogger Debug: Adding a new peer-reflexive candidate: 10.8.21.1:51196
+```
 
 
 You should see messages from our customLogger, as two PeerConnections start a session