Update readme

Author: ip2location

README.md

@@ -206,6 +206,7 @@ Below are the methods supported in this module.
 
 |Method Name|Description|
 |---|---|
+|Constructor(csvFile)|Expect a IP2Location Country Information CSV file. This database is free for download at https://www.ip2location.com/free/country-information|
 |getCountryInfo(countryCode)|Returns the country information.|
 
 ## Usage
@@ -231,6 +232,7 @@ Below are the methods supported in this module.
 
 |Method Name|Description|
 |---|---|
+|Constructor(csvFile)|Expect a IP2Location ISO 3166-2 Subdivision Code CSV file. This database is free for download at https://www.ip2location.com/free/iso3166-2|
 |getRegionCode(countryCode, regionName)|Returns the region code for the supplied country code and region name.|
 
 ## Usage

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "ip2location-nodejs",
-	"version": "9.4.1",
+	"version": "9.4.2",
 	"description": "IP2Location geolocation component",
 	"keywords": [
 		"ip2location",

src/ip2location.js

@@ -5,7 +5,7 @@ var https = require("https");
 const csv = require("csv-parser");
 
 // For BIN queries
-const VERSION = "9.4.1";
+const VERSION = "9.4.2";
 const MAX_INDEX = 65536;
 const COUNTRY_POSITION = [
   0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,