Create README.md

Important Note: The `new_game_flag` column in `dataset.csv` is incorrect. Please refer to [my bigger Pacman dataset](https://huggingface.co/datasets/kimic/pacman) for accurate information.

README.md

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+---
+license: mit
+task_categories:
+- reinforcement-learning
+language:
+- en
+tags:
+- Pacman
+- GWM
+size_categories:
+- 1K<n<10K
+---