Update README.md

README.md

@@ -32,7 +32,14 @@ configs:
   data_files:
   - split: train
     path: data/train-*
+license: cc-by-sa-4.0
 ---
 # Dataset Card for "mathoverflow-accepted"
 
-[More Information needed](https://github.com/huggingface/datasets/blob/main/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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+This is a dump of [the mathoverflow StackExchange community](https://mathoverflow.net/), converted to markdown.
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+Data from [The StackExchange data dump](https://archive.org/details/stackexchange), 2023-09-12 release.
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+Posts with images are removed. Only accepted answers are included.