Bumped core protocol to 24.

src/main/java/com/onarandombox/MultiverseCore/MultiverseCore.java

@@ -127,7 +127,7 @@ import org.mcstats.Metrics;
  * The implementation of the Multiverse-{@link Core}.
  */
 public class MultiverseCore extends JavaPlugin implements MVPlugin, Core {
-    private static final int PROTOCOL = 23;
+    private static final int PROTOCOL = 24;
     // TODO: Investigate if this one is really needed to be static.
     // Doubt it. -- FernFerret
     private static Map<String, String> teleportQueue = new HashMap<String, String>();