Corrected import paths so that pip works properly

[mark5280]

Changed the paths in set up imports given changes in pip

[clemfromspace]

Hi @mark5280 ,

Thanks for opening this! Could you add a try...except clause to the pip imports like this: https://github.com/clemfromspace/scrapy-selenium/blob/develop/setup.py#L4 ?

This way, we also handle the previous pip version :)

Thanks!