add the live stream example

Hi,sarxos,this example contains an server and an client,both works fine.Them server side accept the connection and encode the video stream ,then send it inside an frame message,
the client side receive the message from the server side,and then decode it first frame decoder and then the h264 decoder.

I decode the image from the stream.and then display it on the client side window.The client side can open as many as you can ,and the stream will stop when there is no clients,and will start to stream when there at least one client connected ,the h264 encoder is not attach to the netty's channel pipeline for the performance issue .and the frame encoder can move out of the channel pipeline too.


thanks for your great project ,really thanks,feel free to modify it .