Create README.md
Author: XiaoqiJiao
Pull request: yes
Labels: name: model card

# What does this PR do?

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Fixes # (issue)


## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dimiss the other checks if that's the case).
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 albert, bert, XLM: @LysandreJik 
 GPT2: @LysandreJik, @patrickvonplaten
 tokenizers: @mfuntowicz
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 Benchmarks: @patrickvonplaten
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 nlp datasets: [different repo](https://github.com/huggingface/nlp)
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Comments:
This is great, thanks for uploading and sharing.

Will merge this now, but had two questions:
- should we add a link back to your repo at https://github.com/huawei-noah/Pretrained-Language-Model/tree/master/TinyBERT
- Is this checkpoint version 1 or version 2 from https://github.com/huawei-noah/Pretrained-Language-Model/blame/master/TinyBERT/README.md#L62-L72

Thank you!