add chapter 3 zh-tw translation
let's use 你 (informal) instead of 您 (formal)
revert buildpages.js changes
revert commit of guide/challaenges/commit_to_it
patch to chapter 03 zh-tw translation
one more fix for guide/challenges
Merge pull request #71 from itszero/zhtw-translation-3

第三章的中文翻譯