Create README.md for bio+discharge summary BERT
Add Bio+ Discharge Summary BERT from Publicly Available Clinical BERT Embeddings
# [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=h1) Report
> Merging [#3230](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/e43afb1bb87f01470d0bd16cac2d2aac50a76d7a?src=pr&el=desc) will **increase** coverage by `0.08%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/3230/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master    #3230      +/-   ##
==========================================
+ Coverage   77.94%   78.02%   +0.08%     
==========================================
  Files          98       98              
  Lines       16665    16665              
==========================================
+ Hits        12989    13003      +14     
+ Misses       3676     3662      -14
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/transformers/modeling\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3230/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ191dGlscy5weQ==) | `93.84% <0%> (+0.27%)` | :arrow_up: |
| [src/transformers/modeling\_tf\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3230/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ190Zl91dGlscy5weQ==) | `88.37% <0%> (+2.14%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=footer). Last update [e43afb1...2ed661c](https://codecov.io/gh/huggingface/transformers/pull/3230?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
