edit commands and navigation
revert summery
revert wearables summery
Merge pull request #93 from zhaochunqi/gh-pages

翻译完善
Update Readme
design-nav/index reviewed
design-nav/screen-planning reviewed
design-nav/multi-sizes reviewed
design-dev/descendant-lateral reviewed
design-nav/ancestral-temporal reviewed:
design-nav/wireframing reviewed
summary updated
 git README updated
Merge pull request #94 from Lin-H/gh-pages

修正custom view的部分错别字
Merge pull request #95 from meituan/gh-pages

Review
commit efficient download png
Comple Book at 0723
fix multi-sizes link
Merge pull request #97 from meituan/gh-pages

fix multi-sizes link
Commit System-UI