Add verifyToken field to verify evaluation results are produced by Hugging Face's automatic model evaluator

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Update README.md

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Add evaluation results on the squad_v2 config of squad_v2 (#5)

Fix typo

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Update README.md

draft update for the model card

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Update README.md

add language tag

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Update README.md

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Add license info

Migrate model card from transformers-repo

Update to v2