add COCL_DEVICES_ALL=1 in .travis.yml
add COCL_DEVICES_ALL=1 in .travis.yml

hughperkins/cuda-on-cl,hughperkins/cuda-on-cl,hughperkins/cuda-on-cl,hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/coriander,hughperkins/coriander,hughperkins/coriander