update README

Signed-off-by: Runji Wang <[email protected]>

Author: wangrunji0408

CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.1.0] - 2022-04-20
+
+### Added
+
+- Asynchronous UCP bindings.

README.md

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 # async-ucx
 
-[![CI](https://github.com/wangrunji0408/async-ucx/workflows/CI/badge.svg?branch=master)](https://github.com/wangrunji0408/async-ucx/actions)
+[![Crate](https://img.shields.io/crates/v/async-ucx.svg)](https://crates.io/crates/async-ucx)
+[![Docs](https://docs.rs/async-ucx/badge.svg)](https://docs.rs/async-ucx)
+[![CI](https://github.com/madsys-dev/async-ucx/workflows/CI/badge.svg?branch=main)](https://github.com/madsys-dev/async-ucx/actions)
 
 Async Rust UCX bindings.
+
+## Optional features
+
+- `event`: Enable UCP wakeup mechanism.
+- `am`: Enable UCP Active Message API.
+
+## License
+
+MIT License

ucx1-sys/CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.1.0] - 2022-04-20
+
+Initial release.

ucx1-sys/README.md

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+# ucx1-sys
+
+[![Crate](https://img.shields.io/crates/v/ucx1-sys.svg)](https://crates.io/crates/ucx1-sys)
+[![Docs](https://docs.rs/ucx1-sys/badge.svg)](https://docs.rs/ucx1-sys)
+[![CI](https://github.com/madsys-dev/async-ucx/workflows/CI/badge.svg?branch=main)](https://github.com/madsys-dev/async-ucx/actions)
+
+Rust FFI bindings to UCX.