PR for gilded blackstone and nether gold ore to the mining skill, and nether gold ore to the smelting skill. (#4253)

* Added gilded blackstone and nether gold ore.

* Added nether gold ore to smelting xp.

src/main/java/com/gmail/nossr50/util/MaterialMapStore.java

@@ -201,6 +201,8 @@ public class MaterialMapStore {
         ores.add("redstone_ore");
         ores.add("emerald_ore");
         ores.add("ancient_debris");
+        ores.add("nether_gold_ore");
+        ores.add("gilded_blackstone");
     }
 
     private void fillArmors() {

src/main/resources/experience.yml

@@ -464,6 +464,7 @@ Experience_Values:
         Lapis_Ore: 40
         Nether_Quartz_Ore: 25
         Redstone_Ore: 15
+        Nether_Gold_Ore: 35
     Taming:
         Animal_Taming:
             Llama: 1200