improved code indentation in pixel_colour_from_ray()
tree5412ae59dff57fdd0a9cff69295d25569c6623b5
-rw-r--r-- 36978 raytracer.erl
-rwxr-xr-x 86 run-concurrent.sh
-rwxr-xr-x 112 run-distributed.sh
-rwxr-xr-x 82 run.sh