Update readme for Glowstone++
Update readme for Glowstone++

Closes https://github.com/deathcap/GlowstonePlusPlus/issues/3

Postremus/GlowstonePlusPlus,keke142/GlowstonePlusPlus,keke142/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,BlazePowered/Blaze-Server,GlowstonePlusPlus/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,BlazePowered/Blaze-Server,keke142/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,keke142/GlowstonePlusPlus,BlazePowered/Blaze-Server,GreenBeard/GlowstonePlusPlus,GreenBeard/GlowstonePlusPlus,Postremus/GlowstonePlusPlus,GlowstoneMC/GlowstonePlusPlus,LukBukkit/GlowstonePlusPlus,BlazePowered/Blaze-Server,LukBukkit/GlowstonePlusPlus,GlowstonePlusPlus/GlowstonePlusPlus,jimmikaelkael/GlowstonePlusPlus