Introduced updater for config.yml

Signed-off-by: DroppingAnvil <dr0pping.4nvi1@gmail.com>

src/main/java/com/massivecraft/factions/util/Updater.java

@@ -0,0 +1,26 @@
+package com.massivecraft.factions.util;
+
+import com.massivecraft.factions.FactionsPlugin;
+import org.bukkit.configuration.file.FileConfiguration;
+
+import java.io.File;
+import java.io.IOException;
+
+public class Updater {
+    public static double currentVersion = 1.0;
+    public static void updateIfNeeded(FileConfiguration conf) {
+        double version = conf.getDouble("Config-Version", 0);
+        //Previous version
+        if (version == 0) {
+            //Instructions for this configuration to be updated to current
+            FactionsPlugin.getInstance().log("Your config.yml is pre-versioning so we are going to assign it version 1.0 \n Please regenerate your config.yml if you run into any errors relating to config.");
+            conf.set("Config-Version", 1.0);
+            version = 1.0;
+        }
+        //End with save + reload
+        try {
+            conf.save(new File("plugins/Factions/config.yml"));
+            FactionsPlugin.getInstance().reloadConfig();
+        } catch (IOException e) {e.printStackTrace();}
+    }
+}