added simple example that runs a tornado web server which can send zmq messages to echostream.py
added simple example that runs a tornado web server which can send zmq messages to echostream.py

Signed-off-by: MinRK <benjaminrk@gmail.com>

closes gh-107

Mustard-Systems-Ltd/pyzmq,ArvinPan/pyzmq,swn1/pyzmq,dash-dash/pyzmq,Mustard-Systems-Ltd/pyzmq,swn1/pyzmq,ArvinPan/pyzmq,yyt030/pyzmq,dash-dash/pyzmq,caidongyun/pyzmq,yyt030/pyzmq,caidongyun/pyzmq,dash-dash/pyzmq,ArvinPan/pyzmq,yyt030/pyzmq,swn1/pyzmq,Mustard-Systems-Ltd/pyzmq,caidongyun/pyzmq