docs: Add development status section to README.md

Author: sanity

README.md

@@ -2,6 +2,18 @@
 
 ![Screenshot of chat interface](screenshot-20241009.png)
 
+## Current Status (Jan 2025)
+
+River is currently in active development. We're working towards an alpha release by end of January 2025. Key features currently implemented:
+
+- Basic chat functionality
+- Room creation and management
+- Invitation-based membership
+- Message signing and verification
+- Web interface foundation
+
+Please note this is pre-release software - expect breaking changes and missing features. We welcome testing and feedback from early adopters!
+
 River is a decentralized group chat system built on Freenet, designed to provide a secure and
 upgradeable alternative to traditional chat platforms. It features a web-based interface built
 with [Dioxus](https://dioxuslabs.com) and a modular contract architecture using the freenet-scaffold