update pyzmq requirement
update pyzmq requirement

notebook app static path need to be imported that require pyzmq

iamjakob/nbviewer,Jay-Oh-eN/nbviewer,twosigma/beaker-sharing-server,imsparsh/nbviewer,twosigma/beaker-sharing-server,thomasyu888/nbviewer,Sage-Bionetworks/nbviewer,franblas/beaker-sharing-server,Sage-Bionetworks/nbviewer,roxyboy/nbviewer,franblas/beaker-sharing-server,imsparsh/nbviewer,bollwyvl/nbviewer,franblas/beaker-sharing-server,twosigma/beaker-sharing-server,AlfiyaZi/nbviewer,christophelec/nbviewer,iamjakob/nbviewer,roxyboy/nbviewer,AlfiyaZi/nbviewer,Jay-Oh-eN/nbviewer,christophelec/nbviewer,twosigma/beaker-sharing-server,bollwyvl/nbviewer,franblas/beaker-sharing-server,thomasyu888/nbviewer