Update README.md

README.md

@@ -149,4 +149,5 @@ Please consider to cite our paper and this framework, if they are helpful in you
 - [verl](https://github.com/volcengine/verl): the RL training framework we built upon.
 - [vllm](https://github.com/vllm-project/vllm): we built upon vllm for the rollout engine.
 - [Flow-GRPO](https://github.com/yifan123/flow_grpo): we refer to the Flow-GRPO for the image/video generation RL part.
+- [Shot2story](https://arxiv.org/abs/2312.10300): we curate 18K long videos from the Shot2Story.