More minor README work.
More minor README work.

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