silly little voxely stuff
download SDL2-devel-2.0.5-VC.zip and extract the lib and include directories found in it into extern/sdl
make a build directory and cd into it
cmake -G "Visual Studio 14 Win64" . ..
when i stumble (like all the time), i try to google the solution, which more often that not gives me the answer. i try to give credit where it is due, but it's not always practical or warranted.