add fancy build status badge to downloads
add fancy build status badge to downloads

also change the recommended build script to the one that works
Postremus/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,BlazePowered/Blaze-Server,jimmikaelkael/GlowstonePlusPlus,keke142/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,keke142/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,BlazePowered/Blaze-Server,BlazePowered/Blaze-Server,keke142/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,keke142/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,BlazePowered/Blaze-Server,GreenBeard/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus