Update README with features overview and quick start (#467)

* Update README with features overview and quick start

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Add pointer to capacitor-airship plugin for Capacitor users

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: rlepinski

README.md

@@ -1,12 +1,59 @@
 # Cordova Airship Plugin
 
-A Cordova plugin for Airship's iOS and Android SDK.
+[![npm version](https://badge.fury.io/js/%40ua%2Fcordova-airship.svg)](https://badge.fury.io/js/%40ua%2Fcordova-airship)
+[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
-### Resources
+The official Airship Cordova plugin for iOS and Android.
 
-* [Getting started guide](https://docs.airship.com/platform/mobile/setup/sdk/cordova/)
-* [API docs](https://docs.airship.com/reference/libraries/urbanairship-cordova/latest/)
+> **Using Capacitor?** See the [capacitor-airship](https://github.com/urbanairship/capacitor-airship) plugin instead.
 
-### Issues
+## Features
 
-Please visit https://support.airship.com/ for any issues integrating or using this plugin.
+- **Push Notifications** - Rich, interactive push notifications with deep linking
+- **Live Activities & Live Updates** - Real-time content updates on iOS Lock Screen and Android Live Content
+- **In-App Experiences** - Contextual messaging, automation, and Scenes
+- **Message Center** - Persistent inbox for rich messages with HTML, video, and interactive content
+- **Preference Center** - User preference management
+- **Feature Flags** - Dynamic feature toggles and experimentation
+- **Analytics** - Comprehensive user behavior tracking
+- **Contacts** - User identification and contact management
+- **Tags, Attributes & Subscription Lists** - User segmentation, personalization, and subscription management
+- **Privacy Controls** - Granular data collection and feature management
+
+## Quick Start
+
+Install the plugin:
+```bash
+cordova plugin add @ua/cordova-airship
+```
+
+### Initialization
+
+Call `takeOff` once during app startup, before any other Airship API:
+```javascript
+document.addEventListener('deviceready', function () {
+  Airship.takeOff({
+    default: {
+      appKey: 'YOUR_APP_KEY',
+      appSecret: 'YOUR_APP_SECRET',
+    },
+  }, function () {
+    Airship.push.enableUserNotifications();
+  });
+});
+```
+
+For a more detailed setup guide, please see the full [Getting Started Documentation](https://docs.airship.com/platform/mobile/setup/sdk/cordova/).
+
+## Versions and Support
+
+For the current Support Status of each plugin major, EOL dates, and the full lifecycle policy, see the [Airship SDK Support Policy](https://www.airship.com/docs/reference/sdk-support-policy/).
+
+## Resources
+
+- **[Documentation](https://docs.airship.com/platform/mobile/setup/sdk/cordova/)** - Complete SDK integration guides and feature documentation
+- **[API Reference](https://docs.airship.com/reference/libraries/urbanairship-cordova/latest/)** - Detailed TypeScript API documentation
+- **[SDK Support Policy](https://www.airship.com/docs/reference/sdk-support-policy/)** - Version lifecycle, support windows, and EOL dates across all Airship SDKs
+- **[GitHub Issues](https://github.com/urbanairship/urbanairship-cordova/issues)** - Report bugs and request features
+- **[Changelog](CHANGELOG.md)** - Release notes and version history
+- **[Support](https://support.airship.com/)** - Contact Airship support