docs: add image for Scratch for Arduino Uno Q in README (#28)

Author: dido18

README.md

@@ -1,16 +1,25 @@
 # Scratch for Arduino Uno Q
 
+> Arduino UNO Q + Scratch = ❤️
+
+## Description
+
+Scratch for Arduino UNO Q is an Arduino App that runs Scratch directly on the board to control physical world (e.g., LEDs, buttons, and Arduino Modulino) with optional AI model integration.
+Accessible from any device via a browser, it makes coding, electronics, and AI hands-on and easy to explore.
+
+![Scratch for Arduion UNO Q](./doc/scratch-unoq.png)
+
 ## Installation
 
-- Connect to the board using `adb` following https://docs.arduino.cc/software/app-lab/tutorials/cli/ and open the `adb shell`
-- From inside the board, Install the latest `scratch-arduino-app` into the board running the command:
+- Connect the Arduino Uno Q board via USB
+- Open an `adb shell` into the board using [adb](https://docs.arduino.cc/software/app-lab/tutorials/cli/)
+- Copy and paste the following command into the terminal to install the latest `scratch-arduino-app` into the board:
 
 ```
 curl -sSL https://raw.githubusercontent.com/dido18/scratch-arduino-app/main/install.sh | bash
 ```
 
-- Open the `ArduinoAppLab` and start the app
-- Visit the `<IP_OR_BOARD_NAME>:7000` to open the Scratch App.
+- Open the Scratch interface at the `<IP_OR_BOARD_NAME>:7000` address
 
 ### Local development