add using-styleguide.markdown to _zh-cn folder
Translate using-styleguide.markdown into Chinese
Merge pull request #839 from chenxsan/web-starter-kit

Translate using-styleguide.markdown into Chinese
Fixed #814 - more small fixes to user-consent.html
Merge branch 'master' of https://github.com/google/WebFundamentals
Fixed #813 - removed period in section title, changed e.g. to for example.
Fixes #841 - adds big actionable demo button
Fixes 838 - nav pattern buttons don't work
Changed updated-on date part of #838
Fixed #812 - typos in intro and capitalization of card titles.
Merge branch 'master' of https://github.com/google/WebFundamentals
Fixes #842 - uses correct path for samples from config
Merge branch 'master' of https://github.com/google/WebFundamentals
Fixed #809 - capitalization is consistent in Monetization
Merge branch 'master' of https://github.com/google/WebFundamentals
Update make server to use grunt
Merge branch 'master' of https://github.com/google/WebFundamentals
Fixed #808 - added TL;DR to size-videos-correctly and added a 'Related guides' section
Merge branch 'master' of https://github.com/google/WebFundamentals
Fixed #806 - typos in "Animations and Performance" TL;DR and added "Related guides"