Help other developers get started using this SDK. (#15)

Signed-off-by: DazWilkin <daz.wilkin@gmail.com>

Author: DazWilkin

README.md

@@ -14,3 +14,14 @@
 [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/master/LICENSE
+
+## Examples
+
++ [Hello World](./examples/hello_world.rs)
++ [HTTP Auth random](./examples/http_auth_random.rs)
++ [HTTP Headers](./examples/http_headers.rs)
+
+## Articles & blog posts from the community
+
++ [Extending Envoy with WASM and Rust](https://antweiss.com/blog/extending-envoy-with-wasm-and-rust/)
++ [Extending Istio with Rust and WebAssembly](https://blog.red-badger.com/extending-istio-with-rust-and-webassembly)