Created wiki_movies dataset.
looks like your PR includes changes about many other files than the ones for wiki_movies

Can you create another branch and another PR please ? I'm happy to. What's the best way to do that (sorry, I'm new to PRs etc.)? Sure !

First please save your new dataset files somewhere.
Then you can do in this order:
```
git checkout master
git fetch upstream
git rebase upstream/master
git push
git checkout -b my-new-branch-name
```
This will create a new branch from the updated master branch.
Then you can re-add your files and commit + push them

Once it's done you should be able to create a new PR using your new branch :)  Done! closing in favor of #1485 
First PR (ever). Hopefully this movies dataset is useful to others!