Update README.md

Author: ZeyuChen

README.md

@@ -323,6 +323,17 @@ PaddleNLP提供了多粒度、多场景的NLP应用示例，面向动态图模
 
 更多版本更新说明请查看[ChangeLog](./docs/changelog.md)
 
+## Citation
+
+如果PaddleNLP对您的研究有帮助，欢迎引用
+```
+@misc{=paddlenlp,
+    title={An Easy-to-use and High Performance NLP Library based on PaddlePaddle},
+    author={PaddleNLP Contributors},
+    howpublished = {\url{https://github.com/PaddlePaddle/PaddleNLP}},
+    year={2021}
+}
+```
 ## Acknowledge
 
 我们借鉴了Hugging Face的[Transformers](https://github.com/huggingface/transformers)🤗关于预训练模型使用的优秀设计，在此对Hugging Face作者及其开源社区表示感谢。

README_en.md

@@ -13,12 +13,12 @@ English | [简体中文](./README.md)
 
 ## News  <img src="./docs/imgs/news_icon.png" width="40"/>
 
-* [2021-12-12] PaddleNLP 2.2 has been officially relealsed! :tada: For more information please refer to [Release Note](https://github.com/PaddlePaddle/PaddleNLP/releases/tag/v2.2.0).
-* [2021-10-12] PaddleNLP 2.1 has been officially relealsed! :tada: For more information please refer to [Release Note](https://github.com/PaddlePaddle/PaddleNLP/releases/tag/v2.1.0).
+* [2021-12-12] PaddleNLP v2.2 has been officially relealsed! :tada: For more information please refer to [Release Note](https://github.com/PaddlePaddle/PaddleNLP/releases/tag/v2.2.0).
+* [2021-12-12] *End-to-end Question Answering Toolkit**🚀[RocketQA](https://github.com/PaddlePaddle/RocketQA) has been released！:tada:
 
 ## Introduction
 
-**PaddleNLP** is a powerful NLP library with **Awesome** pre-trained Transformer models and easy-to-use interface, supporting wide-range of NLP tasks from research to industrial applications.
+**PaddleNLP** is an **easy-to-use** and **high performance** NLP library with **awesome** pre-trained Transformer models, supporting wide-range of NLP tasks from research to industrial applications.
 
 
 * **Easy-to-Use API**
@@ -222,6 +222,18 @@ Join our QQ Technical Group for technical exchange right now! ⬇️
 
 For more details about our release, please refer to [ChangeLog](./docs/changelog.md)
 
+## Citation
+
+If you find PaddleNLP useful in your research, please consider cite
+```
+@misc{=paddlenlp,
+    title={An Easy-to-use and High Performance NLP Library based on PaddlePaddle},
+    author={PaddleNLP Contributors},
+    howpublished = {\url{https://github.com/PaddlePaddle/PaddleNLP}},
+    year={2021}
+}
+```
+
 ## Acknowledge
 
 We have borrowed from Hugging Face's [Transformer](https://github.com/huggingface/transformers)🤗 excellent design on pretrained models usage, and we would like to express our gratitude to the authors of Hugging Face and its open source community.