Added the dataset clickbait_news_bg
CONTRIBUTOR
Hi @tsvm  Great work! 
Since you have raised a clean PR could you close the earlier one -   #1445 ? 

2020-12-15T07:43:10Z
https://github.com/huggingface/datasets/pull/1568#issuecomment-745114547
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CONTRIBUTOR
> Hi @tsvm Great work!
> Since you have raised a clean PR could you close the earlier one - #1445 ?

Done.
2020-12-15T13:05:47Z
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There was a problem with my [previous PR 1445](https://github.com/huggingface/datasets/pull/1445) after rebasing, so I'm copying the dataset code into a new branch and submitting a new PR.