Attempt to use stable version of node on Travis build
Attempt to use stable version of node on Travis build


Former-commit-id: f500e4d9d3bd2d0db5ad40d701bf150b686951b4
Former-commit-id: 78640cfbaf206001a5ec4af9419141f63fbe2fcd
Former-commit-id: e241cddfab03461a50d11ed6b3a1e9be05c4d3d6
ONSdigital/florence,ONSdigital/florence,ONSdigital/florence,ONSdigital/florence