Add Discord link to readme
Add Discord link to readme

minecraft-dev/MinecraftDev,DemonWav/MinecraftDev,DemonWav/MinecraftDevIntelliJ,minecraft-dev/MinecraftDev,minecraft-dev/MinecraftDev,DemonWav/MinecraftDev,DemonWav/MinecraftDevIntelliJ,DemonWav/MinecraftDev,DemonWav/MinecraftDevIntelliJ,DemonWav/IntelliJBukkitSupport