Update README for @nteract/commutable to match format
Update README for @nteract/commutable to match format

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