Added CamembertForQuestionAnswering
# [Codecov](https://codecov.io/gh/huggingface/transformers/pull/2746?src=pr&el=h1) Report
> Merging [#2746](https://codecov.io/gh/huggingface/transformers/pull/2746?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/2184f87003c18ad8a172ecab9a821626522cf8e7?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/2746/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/transformers/pull/2746?src=pr&el=tree)

```diff
@@            Coverage Diff            @@
##           master   #2746      +/-   ##
=========================================
+ Coverage    75.1%   75.1%   +<.01%     
=========================================
  Files          93      93              
  Lines       15249   15253       +4     
=========================================
+ Hits        11452   11456       +4     
  Misses       3797    3797
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/2746?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/transformers/\_\_init\_\_.py](https://codecov.io/gh/huggingface/transformers/pull/2746/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9fX2luaXRfXy5weQ==) | `98.87% <ø> (ø)` | :arrow_up: |
| [src/transformers/data/processors/squad.py](https://codecov.io/gh/huggingface/transformers/pull/2746/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9kYXRhL3Byb2Nlc3NvcnMvc3F1YWQucHk=) | `29.18% <ø> (ø)` | :arrow_up: |
| [src/transformers/modeling\_camembert.py](https://codecov.io/gh/huggingface/transformers/pull/2746/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ19jYW1lbWJlcnQucHk=) | `100% <100%> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/2746?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/2746?src=pr&el=footer). Last update [2184f87...74c277a](https://codecov.io/gh/huggingface/transformers/pull/2746?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
<|||||>@julien-c Could you please review ;)