Merge pull request #9 from chengyuan9826/master

添加注册、登录组件
更新
增加图片加载
更新目录结构
plug插件添加

适用于固定布局，兼容ie6
Merge pull request #16 from lisongyu/master

plug插件添加
Merge branch 'master' of https://github.com/strivek/nomad