##Simple Video 该项目是跟随edx-xblock tutorial做的一个Video block demo，尚未完成
Simple Video插件在课程中展示视频，用到了oembed , 可以记录用户观看次数，并允许投票
##关于Xblock
XBlocks are Python classes that implement a small web application. Like full applications, they have state and methods, and operate on both the server and the client.
XBlocks are implemented as Python code, and packaged using standard Python techniques. They have Python code, and other file resources, including CSS and Javascript needed to fully render themselves in a browser.
简单来说Xblock是使用python实现的一套组件,用户创建的Xblock实例拥有自定义的数据和方法。Xblock用以对edx课程进行扩展
##参考资料