Update README.md

Author: ip2location-com

README.md

@@ -25,7 +25,10 @@ Below are the methods supported in this class.
 
 |Method Name|Description|
 |---|---|
+|public void Open(String DBPath, boolean UseMMF)|Initialize the component and preload the BIN file.|
+|public void Open(String DBPath)|Initialize the component and preload the BIN file.|
 |IPQuery(String IPAddress)|Query IP address. This method returns results in com.ip2location.IPResult object.|
+|public void Close()|Destroys the mapped bytes.|
 
 ## Result methods
 Below are the result methods.
@@ -83,7 +86,9 @@ public class Main
 			String binfile = "/usr/data/IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE.BIN";
 
 			IP2Location loc = new IP2Location();
-			loc.IPDatabasePath = binfile;
+			// loc.IPDatabasePath = binfile;
+			loc.Open(binfile, true);
+			
 			IPResult rec = loc.IPQuery(ip);
 			if ("OK".equals(rec.getStatus()))
 			{
@@ -116,6 +121,10 @@ public class Main
 			System.out.println(e);
 			e.printStackTrace(System.out);
 		}
+		finally
+		{
+			loc.Close();
+		}
 	}
 }
 ```