Add api method to get player's protocol id,

src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -5,6 +5,7 @@ import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.socket.SocketChannel;
+import lombok.NonNull;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -195,6 +196,13 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
         return isPorted(player.getUniqueId());
     }
 
+    @Override
+    public int getPlayerVersion(@NonNull Player player) {
+        if (!isPorted(player))
+            return 47;
+        return portedPlayers.get(player.getUniqueId()).getProtocol();
+    }
+
     @Override
     public boolean isPorted(UUID playerUUID) {
         return portedPlayers.containsKey(playerUUID);

src/main/java/us/myles/ViaVersion/api/ViaVersionAPI.java

@@ -10,13 +10,20 @@ import java.util.UUID;
 
 public interface ViaVersionAPI {
     /**
-     * Is player using 1.9?
+     * Is the player connection modified by ViaVersion?
      *
-     * @param player
-     * @return True if the client is on 1.9
+     * @param player Bukkit player object
+     * @return True if the client is modified (At the moment it also means version 1.9 and higher)
      */
     boolean isPorted(Player player);
 
+    /**
+     * Get protocol number from a player
+     * @param player Bukkit player object
+     * @return Protocol ID, For example (47=1.8-1.8.8, 107=1.9, 108=1.9.1)
+     */
+    int getPlayerVersion(Player player);
+
     /**
      * Is player using 1.9?
      *