Eval metadata batch 3: Reddit, Rotten Tomatoes, SemEval 2010, Sentiment 140, SMS Spam, Snips, SQuAD, SQuAD v2, Timit ASR (#4337)

* Eval metadata batch 3: Quora, Reddit, Rotten Tomatoes, SemEval 2010, Sentiment 140, SMS Spam, Snips, SQuAD, SQuAD v2, Timit ASR

* Update datasets/quora/README.md

Co-authored-by: Quentin Lhoest <42851186+lhoestq@users.noreply.github.com>

* Update README.md

removing ROUGE args

* Update datasets/rotten_tomatoes/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/rotten_tomatoes/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/squad/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/squad_v2/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/squad/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/squad_v2/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update datasets/squad_v2/README.md

Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

* Update README.md

removing eval for quora

Co-authored-by: sashavor <sasha.luccioni@huggingface.co>
Co-authored-by: Quentin Lhoest <42851186+lhoestq@users.noreply.github.com>
Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>

Commit from https://github.com/huggingface/datasets/commit/8ccf58b77343f323ba6654250f88b69699a57b8e

README.md

@@ -20,6 +20,21 @@ task_ids:
 - open-domain-qa
 - extractive-qa
 paperswithcode_id: squad
+train-eval-index:
+- config: squad_v2
+  task: question-answering
+  task_id: extractive_question_answering
+  splits:
+    train_split: train
+    eval_split: validation
+  col_mapping:
+    question: question
+    context: context
+    answers-text: answers-text
+    answers-answer_start: answers-answer_start
+  metrics:
+  - type: squad_v2
+    name: SQuAD v2
 ---
 
 # Dataset Card for "squad_v2"
@@ -191,4 +206,4 @@ archivePrefix = {arXiv},
 
 ### Contributions
 
-Thanks to [@lewtun](https://github.com/lewtun), [@albertvillanova](https://github.com/albertvillanova), [@patrickvonplaten](https://github.com/patrickvonplaten), [@thomwolf](https://github.com/thomwolf) for adding this dataset.
+Thanks to [@lewtun](https://github.com/lewtun), [@albertvillanova](https://github.com/albertvillanova), [@patrickvonplaten](https://github.com/patrickvonplaten), [@thomwolf](https://github.com/thomwolf) for adding this dataset.