updated readme with tshark dependency

README.md

@@ -23,6 +23,18 @@ ollama pull dolphin-mistral:latest
 ```
 3) If not running the desktop application, Start Ollama Server (refer [here](https://github.com/ollama/ollama?tab=readme-ov-file#start-ollama))
 
+4) You also need to install `tshark` executable. You could either install the [Wireshark Application](https://www.wireshark.org/download.html) or simply use `brew install tshark`. 
+
+    <details>
+    <summary>⚠️Warning⚠️ If you don't perform this step, you may below error</summary>
+
+    ```
+    TSharkNotFoundException: TShark not found. Try adding its location to the configuration file.
+    ```
+    </details> 
+
+
+
 ## Usage
 
 1) Install *LPW* using pip