Update readme for release (#4)

README.md

@@ -9,7 +9,8 @@ package managers such as Homebrew, on any platform that Go supports.
 
 ## Installation
 
-Install the plugin you want using `go install`.
+Precompiled binaries are available in the [releases](https://github.com/wasilibs/go-protoc-gen-grpc/releases).
+Alternatively, install the plugin you want using `go install`.
 
 ```bash
 $ go install github.com/wasilibs/go-protoc-gen-grpc/cmd/protoc-gen-grpc_python@latest
@@ -23,7 +24,7 @@ $ protoc --grpc_python_out=out/python -Iprotos protos/helloworld.proto
 
 Note that the filenames of binaries in this repository match protoc conventions so `--plugin` is not needed.
 
-For [buf][3] users, it can be convenient to use `go run` in `buf.gen.yaml`.
+For [buf][3] users, to avoid installation entirely, it can be convenient to use `go run` in `buf.gen.yaml`.
 
 ```yaml
 version: v1
@@ -33,13 +34,19 @@ plugins:
     path: ["go", "run", "github.com/wasilibs/go-protoc-gen-grpc/cmd/protoc-gen-grpc_python@latest"]
 ```
 
-If also using [go-protoc][4] for `protoc_path` when generating the non-gRPC protobuf stubs, and invoking
+If also using [go-protoc-gen-builtins][4] for generating the non-gRPC protobuf stubs, and invoking
 `buf` with `go run`, it is possible to have full protobuf/gRPC generation with no installation of tools,
 besides Go itself, on any platform that Go supports. The above examples use `@latest`, but it is
 recommended to specify a version, in which case all of the developers on your codebase will use the
 same version of the tool with no special steps.
 
+See a full [example][5] in `go-protoc-gen-builtins`. To generate protos, enter the directory and run
+`go run github.com/bufbuild/buf/cmd/[email protected] generate`. As long as your machine has Go installed,
+you will be able to generate protos. The first time using `go run` for a command, Go automatically builds
+it making it slower, but subsequent invocations should be quite fast.
+
 [1]: https://github.com/grpc/grpc
 [2]: https://wazero.io/
 [3]: https://buf.build/
-[4]: https://github.com/wasilibs/go-protoc
+[4]: https://github.com/wasilibs/go-protoc-gen-builtins
+[5]: https://github.com/wasilibs/go-protoc-gen-builtins/tree/main/example