Added "Grave Digger" living armour upgrade

src/main/java/WayofTime/bloodmagic/livingArmour/upgrade/LivingArmourUpgradeGraveDigger.java

@@ -0,0 +1,57 @@
+package WayofTime.bloodmagic.livingArmour.upgrade;
+
+import net.minecraft.nbt.NBTTagCompound;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+
+public class LivingArmourUpgradeGraveDigger extends LivingArmourUpgrade
+{
+    public static final int[] costs = new int[] { 5, 12, 20, 35, 49, 78, 110, 160, 215, 320 };
+    public static final double[] damageBoost = new double[] { 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2 };
+
+    public LivingArmourUpgradeGraveDigger(int level)
+    {
+        super(level);
+    }
+
+    public double getDamageModifier()
+    {
+        return damageBoost[this.level];
+    }
+
+    @Override
+    public String getUniqueIdentifier()
+    {
+        return Constants.Mod.MODID + ".upgrade.graveDigger";
+    }
+
+    @Override
+    public int getMaxTier()
+    {
+        return 10;
+    }
+
+    @Override
+    public int getCostOfUpgrade()
+    {
+        return costs[this.level];
+    }
+
+    @Override
+    public void writeToNBT(NBTTagCompound tag)
+    {
+        // EMPTY
+    }
+
+    @Override
+    public void readFromNBT(NBTTagCompound tag)
+    {
+        // EMPTY
+    }
+
+    @Override
+    public String getUnlocalizedName()
+    {
+        return tooltipBase + "graveDigger";
+    }
+}