Add contributors guide to the readme

readme.md

@@ -1 +1,20 @@
-Stay tuned!
+# Conjure-Oxide
+
+This repository contains the in progress Conjure Oxide constraints modelling
+tool, and it's dependencies. 
+
+This repository hosts the following projects:
+
+* [Conjure Oxide](https://github.com/conjure-cp/conjure-oxide/tree/main/conjure_oxide)
+* [`minion_rs` - Rust bindings to Minion](https://github.com/conjure-cp/conjure-oxide/tree/main/solvers/minion)
+* [`chuffed_rs` - Rust bindings to Chuffed](https://github.com/conjure-cp/conjure-oxide/tree/main/solvers/chuffed)
+
+This project is being produced by staff and students of University of St
+Andrews, and is licenced under the [MPL 2.0](./LICENCE).
+
+## Contributing
+
+See the [Contributors Guide](https://github.com/conjure-cp/conjure-oxide/wiki/Contributing).
+
+<!-- vim: cc=80
+-->