Merge pull request #4 from liaoxuezhi/master

提交初版UML
Merge pull request #5 from liaoxuezhi/master

文档补充
Merge pull request #6 from liaoxuezhi/master

添加文档
Merge pull request #7 from liaoxuezhi/master

初稿
Merge pull request #1 from gmuteam/master

sync master
增加结构图
Merge pull request #8 from miller/master

增加结构图、流程图等
Merge pull request #9 from liaoxuezhi/master

提交版本
Merge pull request #10 from liaoxuezhi/master

小调整