service worker tutorial: https://github.com/jakearchibald/simple-serviceworker-tutorial
git stuff: http://rogerdudler.github.io/git-guide/
repeat todo: https://github.com/kentcdodds/repeat-todo
some other offline stuff: https://github.com/pazguille/offline-first https://github.com/mxstbr/react-boilerplate https://github.com/bahmutov/bottle-service http://www.kinto-storage.org/ https://pouchdb.com/api.html
video: https://vimeo.com/171317290
git commit -m "first commit" git push -u origin master git remote add origin https://github.com/enkhchuluun/mpos.git