Mainly about
- Material design (effects / colors / flashy stuff)
- Components (web components / polymer)
- Offline / notifications (Service worker / iDB / Firebase)
Progressive web app:
- HTTPS
- Add to home screen
- Splash screen
- service worker
- offline

Service worker:
- send reminders
- sessiong starting / updated / rate

- fully offline experience
- Performance tool -- analytics
Noticification:
Debug service worker:

Polymer:


Firebase:

unhandled promise rejections:

Web animation API:
Github

[io PWA] keynote: Launching a Progressive Web App on Google.com
原文:http://www.cnblogs.com/Answer1215/p/5517061.html