Merge pull request #2 from LinZap/master

更新
Merge pull request #25 from auto60713/master

Merge pull request #2 from LinZap/master
Student Login

add student verification and login
Merge pull request #26 from st937072012/master

Merge pull request #7 from LinZap/master
Merge pull request #8 from LinZap/master

add student login