restore readme content

README.md

@@ -5,6 +5,33 @@
 [![Documentation][docs-badge]][docs-link]
 [![Apache 2.0 License][license-badge]][license-link]
 
-```angular2html
-use error！replace unwrap and panic!
-```
+[build-badge]: https://github.com/proxy-wasm/proxy-wasm-rust-sdk/workflows/Rust/badge.svg?branch=main
+[build-link]: https://github.com/proxy-wasm/proxy-wasm-rust-sdk/actions?query=workflow%3ARust+branch%3Amain
+[crate-badge]: https://img.shields.io/crates/v/proxy-wasm.svg
+[crate-link]: https://crates.io/crates/proxy-wasm
+[docs-badge]: https://docs.rs/proxy-wasm/badge.svg
+[docs-link]: https://docs.rs/proxy-wasm
+[license-badge]: https://img.shields.io/github/license/proxy-wasm/proxy-wasm-rust-sdk
+[license-link]: https://github.com/proxy-wasm/proxy-wasm-rust-sdk/blob/main/LICENSE
+
+## Examples
+
+- [Hello World](./examples/hello_world/)
+- [HTTP Auth (random)](./examples/http_auth_random/)
+- [HTTP Headers](./examples/http_headers/)
+- [HTTP Response body](./examples/http_body/)
+- [HTTP Configuration](./examples/http_config/)
+- [gRPC Auth (random)](./examples/grpc_auth_random/)
+
+## Articles & blog posts from the community
+
+- [Extending Envoy with WASM and Rust](https://antweiss.com/blog/extending-envoy-with-wasm-and-rust/)
+- [Writing Envoy filters in Rust with WebAssembly](https://content.red-badger.com/resources/extending-istio-with-rust-and-webassembly)
+
+## Updating dependencies
+
+When updating dependencies, you need to regenerate Bazel `BUILD` files to match updated `Cargo.toml`:
+
+```sh
+bazel run //bazel/cargo:crates_vendor -- --repin all
+```