Revise README with project overview and roadmap

Updated README to provide project details and future plans.

Author: erikjee

README.md

@@ -1,3 +1,21 @@
-A work-in-progress implementation of zstd to rust.
+# libzstd-rs-sys
 
-Absolutely not ready for use.
+This repository contains a Rust implementation of the zstd file format. It aims to provide excellent performance while introducing memory safety.
+
+## How to use
+
+libzstd-rs-sys is in development and is not yet ready for use. 
+
+We will release the decoder in early 2026 and the encoder (pending funding) later in the year.
+
+## Performance
+
+We track our performance at https://trifectatechfoundation.github.io/libzstd-rs-sys-bench/.
+
+## Acknowledgments
+
+This project is based on the [Zstandard reference implementation](https://github.com/facebook/zstd).
+
+## About
+
+libzstd-rs-sys is part of Trifecta Tech Foundation's [Data compression initiative](https://trifectatech.org/initiatives/data-compression/).