Merge pull request #3 from MaGuowei/develop

Develop
Merge pull request #4 from MaGuowei/develop

Keep It Simple, Stupid
Merge pull request #5 from MaGuowei/develop

del util
update .gitignore
Merge pull request #6 from MaGuowei/develop

修改下载页面，设置默认监听端口为8000
Merge branch 'develop'
update README.md