publish from the `shell` targets, and use the publish-artifacts branch for testing
publish from the `shell` targets, and use the publish-artifacts branch
for testing

PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs