中文版Object.observe
问题修正
typo fix :lipstick:
Merge pull request #1316 from gasp/patch-1

webrtc/basics proofreading and typo fix :lipstick:
Merge pull request #1314 from cloverzero/master

Object.observe() , add Chinese version
Automatically updating the calendar
Automatically updating the calendar
add Japanese translation for the Service Worker article
Tweak Japanese translation
Remove duplicated HTML element
fix tiny typos

thanks for your great work
Merge pull request #1321 from myakura/sw-ja

add Japanese translation for the ServiceWorker article
Merge pull request #1322 from html5rocks/master

Merging translations.