对《red5入门教程》的Hello world的完善。

原《red5入门教程》的第一个例子Hello world按照教程是运行不起来的，我花了几天的时间研究了下，把握补充的内容添加了进去，参考《red5入门教程》的同时再加上我的补充，《red5入门教程》就能顺利进行了。-On " red5 Getting Started"　in Hello world of perfection. The original " red5 Getting Started"　Hello world example of the first tutorial is not run by, and I spent the next few days time to study and grasp the contents of the supplement was added in, refer to " red5 Getting Started"　at the same time together I added, " red5 Getting Started"　will be able to smooth out.