add support for websockets / tcp

[ahmadnassri]

all endpoints can be treated as "channels" with websockets

[ghost]

Maybe WebRTC too?

[sonicaghi]

@voltagex we also have this tool: https://github.com/Mashape/tcpbin

[prince-mishra]

@ahmadnassri - The ability to mock a stream of canned responses over a WebSocket is something that I require in one of my projects. I do not wish to maintain another codebase just for this simple feature. If this issue is not being actively worked on already, I propose to take this up (with some help and guidance of course)