Add lang meta

Should the related world events be referenced as well?

src/main/java/net/aufdemrand/denizen/npc/traits/HealthTrait.java

@@ -30,6 +30,48 @@
 
 public class HealthTrait extends Trait implements Listener {
 
+// <--[language]
+// @name Health Trait
+// @group NPC Traits
+// @description
+// By default, NPCs are invulnerable, unable to be damaged. If you want your NPC 
+// to be able to take damage, or use the left click as an interaction, it must
+// have the health trait. The Health trait is automatically enabled if you set
+// the damage trigger state to true.
+//
+// You can use the denizen vulnerable command to make your NPCs react to left
+// click, but not take damage. - vulnerable state:false
+//
+// Enable Damage trigger via dScript: - trigger name:damage state:true
+// Enable Health trait via dScript: - trait state:true health
+// Enable Health trait via npc command: /npc health --set # (-r)
+//
+// Enable automatic respawn (default delay 300t): /npc respawn [delay in ticks]
+// Set respawn location: - flag <npc> respawn_location:<location>
+//
+// Related Tags
+// <@link tag npc.health>
+// <@link tag npc.health.formatted>
+// <@link tag npc.health.max>
+// <@link tag npc.health.percentage>
+// <@link tag npc.has_trait[health]>
+//
+// Related Mechanisms
+// <@link mechanism health>
+// <@link mechanism max_health>
+//
+// Related Commands
+// <@link command heal>
+// <@link command health>
+// <@link command vulnerable>
+//
+// Related Actions
+// <@link action on damage>
+// <@link action on damaged>
+// <@link action on no damage trigger>
+//
+// -->
+
     // Saved to the C2 saves.yml
     @Persist("animatedeath")
     private boolean animatedeath = Settings.healthTraitAnimatedDeathEnabled();