Studying Project

Merge pull request #13 in GIT/studying-project from test to master

* commit '3b30dd4871cba66c6c0124dde4a688f5d8e92584':
  🎈 perf(画图功能模块、登录页面、主页面): 完善了登录页面和主页面，修改了画图功能。