chore(package): update electron to version 1.4.8
chore(package): update electron to version 1.4.8

https://greenkeeper.io/
temogen/nteract,rgbkrk/nteract,jdetle/nteract,jdfreder/nteract,nteract/nteract,nteract/nteract,nteract/nteract,nteract/composition,nteract/composition,nteract/nteract,jdfreder/nteract,captainsafia/nteract,nteract/nteract,rgbkrk/nteract,jdetle/nteract,rgbkrk/nteract,jdetle/nteract,temogen/nteract,captainsafia/nteract,rgbkrk/nteract,0u812/nteract,rgbkrk/nteract,captainsafia/nteract,jdfreder/nteract,0u812/nteract,nteract/composition,0u812/nteract,jdetle/nteract,temogen/nteract,captainsafia/nteract,0u812/nteract,jdfreder/nteract