Update files from the datasets library (from 1.3.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.3.0

README.md

@@ -33,7 +33,7 @@ task_ids:
 ## Tasks supported:
 ### Task categorization / tags
 
-[Versions 2.0.0 and 3.0.0 of the CCN / DailyMail Dataset](https://www.aclweb.org/anthology/K16-1028.pdf) were developed for abstractive and extractive summarization. [Version 1.0.0](https://papers.nips.cc/paper/5945-teaching-machines-to-read-and-comprehend.pdf) was developed for machine reading and comprehension and abstractive question answering. 
+[Versions 2.0.0 and 3.0.0 of the CNN / DailyMail Dataset](https://www.aclweb.org/anthology/K16-1028.pdf) were developed for abstractive and extractive summarization. [Version 1.0.0](https://papers.nips.cc/paper/5945-teaching-machines-to-read-and-comprehend.pdf) was developed for machine reading and comprehension and abstractive question answering. 
 
 ## Purpose
 
@@ -129,3 +129,7 @@ News articles have been shown to conform to writing conventions in which importa
 ## Licensing information
 
 The CNN / Daily Mail dataset version 1.0.0 is released under the [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0). 
+
+### Contributions
+
+Thanks to [@thomwolf](https://github.com/thomwolf), [@lewtun](https://github.com/lewtun), [@jplu](https://github.com/jplu), [@jbragg](https://github.com/jbragg), [@patrickvonplaten](https://github.com/patrickvonplaten) for adding this dataset.