Fix appveyor by changing FindSDL2.cmake
Fix appveyor by changing FindSDL2.cmake

LarsAeschlimann/SuperTeacher,NicoHaui/SuperTeacher,NicoHaui/SuperTeacher,NicoHaui/SuperTeacher,BFH-E1D-2015-2016/SuperTeacher,BFH-E1D-2015-2016/SuperTeacher,LarsAeschlimann/SuperTeacher