docs: update README and add license

Author: renanmav

LICENSE

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+Copyright (c) 2024 Renan Mav
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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 # react-native-in-app-browser
 
 An in-app-browser (IAB) module for react-native exposing bindings for [SFSafariViewController](https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller), [ASWebAuthenticationSession](https://developer.apple.com/documentation/authenticationservices/aswebauthenticationsession), [ChromeCustomTabs](https://developer.chrome.com/docs/android/custom-tabs) & more, powered by [Nitro Modules](https://nitro.margelo.com).
+
+<!-- TODO: add event listeners to URL changes -->
+<!-- TODO: add support for incognito mode -->
+
+## Features
+
+- Easy-to-use API
+- Common cross-platform support
+- Platform-specific implementations (iOS and Android)
+
+## Installation
+
+> [!IMPORTANT]
+> Make sure you add [react-native-nitro-modules](https://github.com/mrousavy/nitro) as dependency.
+
+```bash
+npx install @renanmav/react-native-in-app-browser
+```
+
+## Usage
+
+You can choose between common or platform-specific interfacing.
+
+### Basic usage
+
+```typescript
+import { InAppBrowser } from 'react-native-in-app-browser'
+// Open a URL in the in-app browser
+InAppBrowser.open('https://example.com')
+```
+
+<!-- TODO: add platform-specific usage -->
+
+## Platform Compatibility
+
+| Feature                    | iOS | Android |
+| -------------------------- | --- | ------- |
+| InAppBrowser               | ✅  | ✅      |
+| SFSafariViewController     | ✅  | ❌      |
+| ASWebAuthenticationSession | ✅  | ❌      |
+| ChromeCustomTabs           | ❌  | ✅      |
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.