校对sticker sheets
Merge pull request #181 from IceskYsl/master

修改校队进度
Merge pull request #182 from IceskYsl/master

修改校队进度
Merge pull request #1 from 1sters/master

merge master
Merge branch 'master' of github.com:poppinlp/material_design_zh
Update icons.md
Merge pull request #183 from Haoxiqiang/patch-1

Update icons.md
校验switches
Merge pull request #185 from poppinlp/master

校对switches
添加新的校队认领Imagery：chenyusi；Grids：huanglizhuo