fix "this.config is null" crash

src/main/java/io/github/jack1424/realtimeweather/Configurator.java

@@ -21,8 +21,6 @@ public class Configurator {
 	public Configurator(RealTimeWeather rtw) {
 		this.rtw = rtw;
 		configFile = rtw.getConfig();
-
-		refreshValues();
 	}
 
 	public void refreshValues() {

src/main/java/io/github/jack1424/realtimeweather/RealTimeWeather.java

@@ -21,6 +21,7 @@ public final class RealTimeWeather extends JavaPlugin {
 		logger.info("Loading configuration...");
 		saveDefaultConfig();
 		config = new Configurator(this);
+		config.refreshValues();
 
 		debug("TimeSync: " + config.isTimeEnabled());
 		if (config.isTimeEnabled())