Added project description

README.md

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+# Tetris AI
+
+Small project implementing an AI agent for playing Tetris. Contains game environment, agent implementations (heuristic and/or learning-based), and utilities for training and evaluation.
+
+Key points
+
+- Simple Tetris environment and visualization
+- AI agents for automated play and training
+- Scripts for running demos and experiments
+
+Report
+
+- Project report (PDF): [report.pdf](report.pdf)