Update README.md

Author: R055A

README.md

@@ -415,6 +415,7 @@ Inspired by [awesome-php](https://github.com/ziadoz/awesome-php).
 * [keras](https://github.com/keras-team/keras) - A high-level neural networks library and capable of running on top of either TensorFlow or Theano.
 * [pytorch](https://github.com/pytorch/pytorch) - Tensors and Dynamic neural networks in Python with strong GPU acceleration.
 * [pytorch-lightning](https://github.com/Lightning-AI/pytorch-lightning) - Deep learning framework to train, deploy, and ship AI products Lightning fast.
+* [Stable Baselines3](https://github.com/DLR-RM/stable-baselines3) - PyTorch implementations of stable baselines (deep) reinforcement learning algorithms.
 * [tensorflow](https://github.com/tensorflow/tensorflow) - The most popular Deep Learning framework created by Google.
 * [theano](https://github.com/Theano/Theano) - A library for fast numerical computation.