🚀 Feature request Multimodal BERT Models
Hello, it would be great if more **multimodal** BERT models are included in the library. I have noticed that MMBT from Facebook is provided; however, I was unable to find some guidelines about how to make it work with the help of 🤗 Transformers. 

Possible models can be [VilBERT](https://arxiv.org/abs/1908.02265), [VL-BERT](https://arxiv.org/abs/1908.08530), [VisualBERT](https://arxiv.org/abs/1908.03557), [VideoBERT](https://arxiv.org/abs/1904.01766) and so on.

Best regards.
As for guidelines about making MMBT work, here is an example on the mm-imdb dataset: https://github.com/huggingface/transformers/blob/master/examples/mm-imdb/run_mmimdb.py.<|||||>This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
<|||||>Hi seems like above examples folder has been removed, is it because the multi modal experiment is in intermediate stage.<|||||>I believe it's available here: https://github.com/huggingface/transformers/tree/master/examples/contrib/mm-imdb<|||||>Hey is there any progress with it soon? 
I find only the mm-imdb example: https://github.com/huggingface/transformers/tree/master/examples/contrib/mm-imdb

Your LXMERT model receives only text features from what I see ("visual_feats - These are currently not provided by the transformers library.")

Thanks :) <|||||>The example for mmbt on mm-imdb is also an invalid link now. <|||||>Here is a correct link for now https://github.com/huggingface/transformers/tree/master/examples/research_projects/mm-imdb<|||||>> As for guidelines about making MMBT work, here is an example on the mm-imdb dataset: https://github.com/huggingface/transformers/blob/master/examples/mm-imdb/run_mmimdb.py.

The link is broken!<|||||>> The link is broken!

See the reply above you :) That seems to work