Added config for biomes

src/main/java/ru/betterend/config/MainConfig.java

@@ -0,0 +1,34 @@
+package ru.betterend.config;
+
+import com.google.gson.JsonObject;
+
+public class MainConfig extends Config {
+	
+	private static MainConfig instance;
+	
+	public static MainConfig getInstance() {
+		if (instance == null) {
+			instance = new MainConfig();
+		}
+		
+		return instance;
+	}
+	
+	private MainConfig() {
+		//TODO: Need to register config params in the Keeper
+		
+		JsonObject config = ConfigWriter.load();
+		if (config.size() > 0) {
+			this.configKeeper.fromJson(config);
+		} else {
+			this.configKeeper.toJson(config);
+			ConfigWriter.save();
+		}
+	}
+	
+	@Override
+	public void saveChanges() {
+		this.configKeeper.toJson(ConfigWriter.load());
+		ConfigWriter.save();
+	}
+}