Update repo (#2704)

docs/readme.md

@@ -5,3 +5,16 @@ The [windows](https://crates.io/crates/windows) and [windows-sys](https://crates
 * [Getting started](https://kennykerr.ca/rust-getting-started/)
 * [Samples](https://github.com/microsoft/windows-rs/tree/master/crates/samples)  <!-- link to latest samples on repo -->
 * [Releases](https://github.com/microsoft/windows-rs/releases)
+
+This repo is the home of the following crates (and other supporting crates):
+
+* [windows-sys](https://crates.io/crates/windows-sys) - Raw bindings for C-style Windows APIs.
+* [windows](https://crates.io/crates/windows) - Safer bindings including C-style APIs as well as COM and WinRT APIs.
+* [windows-core](https://crates.io/crates/windows-core) - Type support for the `windows` crate.
+* [windows-implement](https://crates.io/crates/windows-implement) - The `implement` macro for the `windows` crate, for implementing COM interfaces.
+* [windows-interface](https://crates.io/crates/windows-interface) - The `interface` macro for the `windows` crate, for declaring COM interfaces.
+* [windows-targets](https://crates.io/crates/windows-targets) - Import libs for Windows.
+* [windows-version](https://crates.io/crates/windows-version) - Windows version information.
+* [windows-metadata](https://crates.io/crates/windows-metadata) - Windows metadata reader.
+* [windows-bindgen](https://crates.io/crates/windows-bindgen) - Windows metadata compiler library.
+* [riddle](https://crates.io/crates/riddle) - Windows metadata compiler tool.