root/pypi: links for google-ngram-downloader

root/pypi google-ngram-downloader-4.0.1.tar.gz
root/pypi google-ngram-downloader-4.0.0.tar.gz
root/pypi google-ngram-downloader-3.1.1.tar.gz
root/pypi google-ngram-downloader-3.1.tar.gz
root/pypi google-ngram-downloader-3.0.1.tar.gz
root/pypi google-ngram-downloader-3.0.tar.gz
root/pypi google-ngram-downloader-2.tar.gz