Add a Readme

README.md

@@ -1,3 +1,20 @@
 # Olympus Image Processing Library
 
-[![License: MPL 2.0](https://img.shields.io/badge/License-MPL_2.0-brightgreen.svg)](https://opensource.org/licenses/MPL-2.0)
+[![License: MPL 2.0](https://img.shields.io/badge/License-MPL_2.0-brightgreen.svg)](https://opensource.org/licenses/MPL-2.0)
+![example workflow](https://github.com/baptisteesteban/olympus/actions/workflows/build-and-test.yml/badge.svg)
+
+## Description
+
+The Olympus Image Processing Library is an experimental library implemented in
+Rust. My initial objective when starting to build this library was to learn the
+Rust programming language by working on a project that would be useful for my
+personal experiments. Its design is **strongly** inspired by the
+[Pylene](https://gitlab.lre.epita.fr/olena/pylene) image processing library and
+follows the same aims. **It has to be noted that this library is entirely developed during my free time, and its progress may be affected by my various other activities.**
+
+Currently, Olympus is not available on the [Rust community's crate
+registry](https://crates.io) but it is intended to when it will be mature
+enough.
+
+In the case you have some ideas or advices about the library, fell free to fill
+an [issue](https://github.com/baptisteesteban/olympus/issues).