Errors when compiling on visual studio 2017 windows

[blessedbythestorm]

I had to manually insert the SDL library paths to the project properties.

Afterwards it just gives compilation errors:
'glActiveTexture': redefinition; previous definition was 'function' nanogui
Error C2659 '=': function as left operand nanogui D:\GITHUB\nanogui-sdl\src\screen.cpp 127

both have to do with glactivetexture.

Was really looking forward to using this :)

[bubach]

I think this PR might be of interest:

GuilhermeAlanJohann@b2f6f1e#diff-919298f4c4966f32444f235ade59cd90

[dalerank]

library redesinged for sdl2 api only, try now