Version Update & README Improvement

Update extension version to 1.8.3
Significantly improve README structure and content
Add detailed descriptions of features, installation, and configuration options
Include sections for the developer guide and contribution guidelines
Add license information

Author: nalbam

README.md

@@ -1,26 +1,56 @@
-# aws-navbar-extension
+# AWS Colorful Navbar
 
 > Change navbar color and flag according to AWS region
 
 [![build](https://img.shields.io/github/actions/workflow/status/nalbam/aws-navbar-extension/push.yml?branch=main&style=for-the-badge&logo=github)](https://github.com/nalbam/aws-navbar-extension/actions/workflows/push.yml)
 [![release](https://img.shields.io/github/v/release/nalbam/aws-navbar-extension?style=for-the-badge&logo=github)](https://github.com/nalbam/aws-navbar-extension/releases)
 
-## Install
+## Features
+
+* Region-based navigation bar color customization
+* Region flag display next to region selector
+* Service-specific favicon updates
+* Account information display
+* Support for all AWS global regions
+* Multi-language support (ko, jp)
+
+## Installation
 
 * [Chrome Web Store](https://chrome.google.com/webstore/detail/aws-colorful-navbar/kgifmgnlchjjippdpkblbdlfidcpceme)
 * [Microsoft Edge](https://chrome.google.com/webstore/detail/aws-colorful-navbar/kgifmgnlchjjippdpkblbdlfidcpceme)
 * [Mozilla Firefox](https://addons.mozilla.org/firefox/addon/aws-colorful-navbar/)
 
-## For Developer
+## For Developers
 
 * Open the Extension Management page by navigating to `chrome://extensions`
 * Enable `Developer Mode` by clicking the toggle switch
 * Click the `LOAD UNPACKED` button and select the extension directory
 
+## Configuration
+
+The extension supports the following configuration options:
+
+* `background`: Enable/disable navbar color customization
+* `flag`: Enable/disable region flag display
+* `favicon`: Enable/disable service-specific favicon
+* `info`: Custom account information display
+
+## Supported Regions
+
+See [flags/README.md](flags/README.md) for a complete list of supported regions and their corresponding flags.
+
 ## Screenshots
 
 ![aws navbar](images/screenshot.png)
 
 ![before](images/aws-navbar-extension-00.png)
 
 ![after](images/aws-navbar-extension-01.png)
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+## License
+
+This project is licensed under the MIT License - see the LICENSE file for details.

manifest.json

@@ -1,7 +1,7 @@
 {
   "name": "AWS Colorful Navbar",
   "description": "Change navbar color and flag according to AWS region",
-  "version": "1.8.2",
+  "version": "1.8.3",
   "manifest_version": 3,
   "icons": {
     "128": "icon.png"