Fix compiling on MacOS X by requiring c++11 standard. Building now requires MacOS X 10.8+ and CMake 3.9+
sky = 66, 71, 141
border = 0, 88, 0
music = Sheep.ogg
clouds = 4
object = fleur, 3, 45, 127, 50, 3, 1, 0, 0, 120, 105
object = mouton1, 3, 88, 222, 122, 4, 1, 0, 0, 275, 200
object = mouton2, 3, 84, 245, 125, 20, 1, 0, 0, 275, 200
object = mouton3, 3, 152, 255, 176, 15, 1, 0, 0, 440, 230
object = mouton4, 3, 148, 245, 162, 20, 1, 0, 0, 440, 205
object = barriere, 3, 34, 190, 300, 10, 1, 0, 0, 381, 140
object = rocher, 3, 16, 90, 69, 3, 1, 0, 0, 110, 65
spray = grass, 7
spray = grass2, 7
spray = grassp, 7
spray = grassp2, 7
spray = fleurland, 7
spray = fleurland2, 7
spray = fleurland3, 7
spray = fleurland4, 7
flakes = 20, 1000, 1000, 25, 1