chore(Travis): Use trusty dist
chore(Travis): Use trusty dist

required for zeromq.js

temogen/nteract,jdetle/nteract,rgbkrk/nteract,jdfreder/nteract,rgbkrk/nteract,nteract/composition,rgbkrk/nteract,jdetle/nteract,jdetle/nteract,nteract/nteract,jdfreder/nteract,jdfreder/nteract,captainsafia/nteract,rgbkrk/nteract,nteract/composition,temogen/nteract,temogen/nteract,nteract/nteract,rgbkrk/nteract,captainsafia/nteract,nteract/nteract,nteract/nteract,jdfreder/nteract,captainsafia/nteract,nteract/composition,jdetle/nteract,nteract/nteract,captainsafia/nteract