Return pagespeed score for your site. Default returned perfomance score.
Example:
~/python ps.py --url=http://mysite.ru [performance|accessibility|best-practices|pwa|seo]
~/python ps.py --url=http://mysite.ru seo
~/python ps.py --url=http://mysite.ru
____________________________
$ python ps.py --url https://github.com
performance: 98
accessibility: 94
best-practices: 85
pwa: 54
seo: 82