small tweaks for README file

Author: Simek

README.md

@@ -1,29 +1,39 @@
 <dd align="center"><img alt="React Native Directory Logo" height="96" src="./assets/icon.png" /></dd>
 <h1 align="center">vscode-react-native-directory</h1>
 
-<img alt="Extension preview" src="./assets/screenshot.png" />
-
 A VS Code extension allowing to browse through React Native Directory and perform actions on the packages inside build-in Command Palette.
 
-## Installation
+<p align="center">
+<img alt="Extension preview" src="./assets/screenshot.png" width="520" align="center" />
+</p>
+
+## 📦 Installation
 
 > [!tip]
 > The extension is currently in the development phase, and only manual build and installation is supported at this time.
 
 1. Make sure you have [Bun](https://bun.sh/docs/installation) installed.
-2. Checkout the repository locally.
-3. Run `bun install && bun compile && bun package` to to install dependencies, compile source and prepare extension package file.
-4. In VS Code:
+1. Checkout the repository locally.
+1. Run the following commands to install dependencies, compile source and prepare extension package file:
+   
+   ```sh
+   bun install && bun compile && bun package
+   ```
+1. In VS Code:
    * Navigate to the "Extensions" pane (<kbd>Ctrl/Cmd+Shift+X</kbd>).
    * Click "More" button (three dots in the right corner of header) and select "Install from VSIX".
    * Select VSIX file which has been created in third step inside the checkout root directory.
 
-## Contributing
+## 📝 Contributing
 
 1. Make sure you have [Bun](https://bun.sh/docs/installation) installed.
-2. Checkout the repository locally.
-3. Run `bun install && bun compile` to install dependencies and compile source.
-4. In VS Code:
+1. Checkout the repository locally.
+1. Run the following commands to install dependencies and compile source:
+   
+   ```sh
+   bun install && bun compile
+   ```
+1. In VS Code:
    * Open folder containing the extension repository.
    * Navigate to the "Run and Debug" pane (<kbd>Ctrl/Cmd+Shift+D</kbd>).
-   * Select "Run with extension" launch task and press "Start Debugging" button (<kbd>F5</kbd>).
+   * Select "Run with extension" launch task and press "Start Debugging" button (<kbd>F5</kbd>).