Update README.md

README.md

 # Title
 
-[Intro]
+## Introduction
+...
 
+## Dealing with Class Imbalance
+
+## Repository
 This repository is organized as follows:
 * [EDA](./EDA): 
     * [output](./EDA/output): Plots about feature distributions, correlations and importance.
@@ -20,4 +24,4 @@ This repository is organized as follows:
     * [shap_plots.py](./explainability/shap_plots.py): Generating SHAP summary plots for the SHAP and SHAP interaction values computed. Comparing major differences between pre- and post-pandemic groups.
     * [output](./explainability/output): SHAP and SHAP interaction summary plots.
 
-[Outro]
\ No newline at end of file
+## Outtro
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