Update README.md

Author: Philippos01

README.md

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-# Algorithms-Data-Structures
+# Algorithms & Data Structures
+
+[![forthebadge](https://forthebadge.com/images/badges/made-with-python.svg)](https://forthebadge.com)
+
+## About the Repository
+
+This repository is about some assignments based on data structures and algorithmic implementations.
+Each assignment concerns a different scientific subject that needs to be optimized with the usage of algorithms written in a programming language(Python 3.10.2).
+Specifically, the exact topic for each assignment is:
+
+* [Sorted Integers Compression & Decompression](https://github.com/Philippos01/Algorithms-Data-Structures/blob/main/assignment-2022-1/README.md)
+* [Sequence Alignment](https://github.com/Philippos01/Algorithms-Data-Structures/blob/main/assignment-2022-2/README.md)
+* [Cycle Detection in a sequence of numbers](https://github.com/Philippos01/Algorithms-Data-Structures/blob/main/assignment-2022-3/README.md)
+