Update zh-CN.js

something added.
Tweaking create_release.rb for issue #373
another small tweak for #373
updating readme for #373
adding format "end of yesterday/today/tomorrow" etc. #375
build for last
Adding tests in preparation for #374
Merge pull request #374 from XadillaX/patch-1

Update zh-CN.js
build for last
adding "day after day after tomorrow" etc for Traditional Chinese as
well
build for last