Friendly warning that craftbukkit is messed up

src/main/java/me/libraryaddict/disguise/LibsDisguises.java

@@ -68,6 +68,12 @@ public class LibsDisguises extends JavaPlugin {
                     "reloads gracefully!");
         }
 
+        if (Bukkit.getBukkitVersion().startsWith("git-Bukkit-")) {
+            DisguiseUtilities.getLogger()
+                    .severe("Oh dear, you seem to be using CraftBukkit. Please use Spigot or Paper instead! This " +
+                            "plugin will continue to load, but it will look like a mugging victim");
+        }
+
         if (!new File(getDataFolder(), "disguises.yml").exists()) {
             saveResource("disguises.yml", false);
         }