* Use $EDITOR to edit the bibtex entries, as `git commit` or `crontab -e` does.
* Bugfixes that prevented the import of an article without associated
bibtex entry or without doi.
You should pass the url of the pdf file to the script, along with the
`download` parameter. It will try the proxies in the `params.py` file,
until it finds one that allow him to get the pdf file.
TODO : Use pdfparanoia to remove watermarks
* Search the PDF file for DOI, manual fallback if not found
* Move the PDF file
* Add its Bibtex entry to the general bibtex file
TODO :
* Better renaming
* Adding to bibtex file
