chore(tonic-web): add crate metadata and README (#675)

tonic-web/Cargo.toml

@@ -1,8 +1,18 @@
 [package]
 name = "tonic-web"
 version = "0.1.0"
-authors = ["Juan Alvarez <[email protected]>"]
+authors = ["Juan Alvarez <[email protected]>"]
 edition = "2018"
+license = "MIT"
+documentation = "https://docs.rs/tonic-web/0.1.0/tonic-web/"
+repository = "https://github.com/hyperium/tonic"
+homepage = "https://github.com/hyperium/tonic"
+description = """
+grpc-web protocol translation for tonic services.
+"""
+readme = "README.md"
+categories = ["network-programming", "asynchronous"]
+keywords = ["rpc", "grpc", "grpc-web"]
 
 [dependencies]
 tonic = { path = "../tonic", default-features = false, features = ["transport"] }

tonic-web/README.md

@@ -0,0 +1,46 @@
+# tonic-web
+
+Enables tonic servers to handle requests from `grpc-web` clients directly, without the need of an
+external proxy. 
+
+## Getting Started
+
+ ```toml
+ [dependencies]
+ tonic_web = "0.1"
+ ```
+
+ ## Enabling tonic services
+
+ The easiest way to get started, is to call the function with your tonic service and allow the tonic 
+ server to accept HTTP/1.1 requests:
+
+ ```rust
+ #[tokio::main]
+ async fn main() -> Result<(), Box<dyn std::error::Error>> {
+     let addr = "[::1]:50051".parse().unwrap();
+     let greeter = GreeterServer::new(MyGreeter::default());
+
+     Server::builder()
+        .accept_http1(true)
+        .add_service(tonic_web::enable(greeter))
+        .serve(addr)
+        .await?;
+
+    Ok(())
+ }
+ ```
+
+## Examples
+
+[tonic-web-demo][1]: React+Typescript app that talking to a tonic-web enabled service using HTTP/1 or TLS.
+
+[conduit][2]: An (in progress) implementation of the [realworld][3] demo in Tonic+Dart+Flutter. This app shows how
+the same client implementation can talk to the same tonic-web enabled server using both `grpc` and `grpc-web` protocols
+just by swapping the channel implementation. 
+
+When the client is compiled for desktop, ios or android, a  grpc `ClientChannel` implementation is used.
+When compiled for the web, a `GrpcWebClientChannel.xhr` implementation is used instead.``
+[1]: https://github.com/alce/tonic-web-demo
+[2]: https://github.com/alce/conduit
+[3]: https://github.com/gothinkster/realworld