Update README.MD

Author: yangheng95

README.MD

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 **Hi, there!** Please star this repo if it helps you! Each Star helps PyABSA go further, many thanks.
 
+PyABSA is a free and open-soruce tool for everyone, but please do not forget to attach the author information and project address in your work. 
+
 # | [Overview](./README.MD) | [HuggingfaceHub](readme/huggingface_readme.md) | [ABDADatasets](readme/dataset_readme.md) | [ABSA Models](readme/model_readme.md) | [Colab Tutorials](readme/tutorial_readme.md) | [Troubleshooting(常见问题解决)](https://github.com/yangheng95/PyABSA/issues/189)
 
 ## Try our demos on Huggingface Space