ScienceQA ack

Author: astonzhang

README.md

@@ -75,4 +75,6 @@ This project is licensed under the Apache-2.0 License.
 
 ## Acknowledgement
 
-Part of our codes are adapted from [ScienceQA](https://github.com/lupantech/ScienceQA) and [Transformers](https://github.com/huggingface/transformers).
+Part of our codes are adapted from [ScienceQA](https://github.com/lupantech/ScienceQA) and [Transformers](https://github.com/huggingface/transformers).
+
+We thank Pan Lu for providing parameter size for ScienceQA baselines.