Update of the SDK package on NPM

[ArnoldBraine]

Would it be possible to update the package of the sawtooth-sdk on the NPM registery? I have been using the sdk with an old version of node and wanted to update, I have been struggling with the zeromq install but seeing that this had been updated on the git it would be great to have it on NPM too since there hasn't been an update there for 3 years