Add paper and update homepage (#3)

- Add paper and update homepage (1acdb6c57f7a1ac2f4438409a3c0acd17e8dbb07)

README.md

@@ -83,9 +83,10 @@ configs:
 
 ## Dataset Description
 
-- **Homepage:** [https://allennlp.org/drop](https://allennlp.org/drop)
+- **Homepage:** https://allenai.org/data/drop
 - **Repository:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
-- **Paper:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+- **Paper:** https://aclanthology.org/N19-1246/
+- **Paper:** https://arxiv.org/abs/1903.00161
 - **Point of Contact:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 - **Size of downloaded dataset files:** 8.30 MB
 - **Size of the generated dataset:** 110.91 MB