switch commuter readme to using yarn
switch commuter readme to using yarn

rgbkrk/nteract,rgbkrk/nteract,nteract/composition,jdfreder/nteract,nteract/nteract,jdfreder/nteract,nteract/composition,rgbkrk/nteract,jdfreder/nteract,nteract/composition,nteract/nteract,rgbkrk/nteract,nteract/nteract,jdfreder/nteract,nteract/nteract,nteract/nteract,rgbkrk/nteract