Add README.md

README.md

+# Reproducibility study – Challenger
+
+This repository contains my work for **Exercise 04 (Module 4)** of the MOOC
+**"Recherche reproductible : principes méthodologiques pour une science transparente"**.
+
+## Objective
+The goal of this exercise is to re-execute (and possibly replicate) part of the
+Challenger Space Shuttle data analysis, and to study the impact of the software
+environment on reproducibility.
+
+## Content
+- Re-execution of the Challenger analysis
+- Comparison of results with the reference implementation
+- Documentation of the software environment
+
+## Tools
+- Language: Python (or R – adapt if needed)
+- Platform: GitLab
+
+## Status
+Work in progress.
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