Add new workspace README and CONTRIBUTING

Co-authored-by: Michael Rosenberg <michael@mrosenberg.pub>

CONTRIBUTING.md

@@ -12,7 +12,7 @@ Patches are welcomed as pull requests on
 email (preferably sent to all of the authors listed in `Cargo.toml`).
 
 All issues on curve25519-dalek are mentored, if you want help with a bug just
-ask @isislovecruft or @hdevalence.
+ask @rozbb or @tarcieri.
 
 Some issues are easier than others. The `easy` label can be used to find the
 easy issues. If you want to work on an issue, please leave a comment so that we

README.md

@@ -0,0 +1,23 @@
+<p align="center">
+<img
+ alt="dalek-cryptography logo: a dalek with edwards curves as sparkles coming out of its radar-schnozzley blaster thingies"
+ width="200px"
+ src="https://cdn.jsdelivr.net/gh/dalek-cryptography/curve25519-dalek/docs/assets/dalek-logo-clear.png"/>
+</p>
+
+# Dalek elliptic curve cryptography
+
+This repo contains pure-Rust crates for elliptic curve cryptography:
+
+
+|                 Crate                    |   Description  | Crates.io | Docs |  CI  |
+-------------------------------------------|----------------|-----------|------|-------
+| [`curve25519-dalek`](./curve25519-dalek) | A library for arithmetic over the Curve25519 and Ristretto elliptic curves and their associated scalars. | [![](https://buildstats.info/crate/curve25519-dalek)](https://crates.io/crates/curve25519-dalek) | [![](https://img.shields.io/docsrs/curve25519-dalek)](https://docs.rs/curve25519-dalek) | [![Rust](https://github.com/dalek-cryptography/curve25519-dalek/actions/workflows/rust.yml/badge.svg?branch=main)](https://github.com/dalek-cryptography/curve25519-dalek/actions/workflows/rust.yml) |
+| [`ed25519-dalek`](./ed25519-dalek)       | An implementation of the EdDSA digital signature scheme over Curve25519. | [![](https://img.shields.io/crates/v/ed25519-dalek.svg)](https://crates.io/crates/ed25519-dalek) | [![](https://docs.rs/ed25519-dalek/badge.svg)](https://docs.rs/ed25519-dalek) | [![Rust](https://github.com/dalek-cryptography/ed25519-dalek/actions/workflows/rust.yml/badge.svg?branch=main)](https://github.com/dalek-cryptography/ed25519-dalek/actions/workflows/rust.yml) |
+| [`x25519-dalek`](./x25519-dalek)         | An implementation of elliptic curve Diffie-Hellman key exchange over Curve25519. | [![](https://img.shields.io/crates/v/x25519-dalek.svg)](https://crates.io/crates/x25519-dalek) | [![](https://docs.rs/x25519-dalek/badge.svg)](https://docs.rs/x25519-dalek) | [![](https://travis-ci.org/dalek-cryptography/x25519-dalek.svg?branch=master)](https://travis-ci.org/dalek-cryptography/x25519-dalek) |
+
+There is also the [`curve25519-dalek-derive`](./curve25519-dalek-derive) crate, which is just a helper crate with some macros that make curve25519-dalek easier to write.
+
+# Contributing
+
+Please see [`CONTRIBUTING.md`](./CONTRIBUTING.md).