add comments to makefile
add comments to makefile

fabianrost84/cython,fabianrost84/cython,da-woods/cython,c-blake/cython,scoder/cython,scoder/cython,fabianrost84/cython,c-blake/cython,cython/cython,cython/cython,c-blake/cython,ChristopherHogan/cython,da-woods/cython,c-blake/cython,da-woods/cython,fabianrost84/cython,da-woods/cython,scoder/cython,cython/cython,c-blake/cython,fabianrost84/cython,ChristopherHogan/cython,ChristopherHogan/cython,scoder/cython,cython/cython