update readme

Author: chrislim2888

README.md

@@ -1,6 +1,10 @@
 # IP2Proxy Ruby Library
 
-This is IP2Proxy Ruby library that lookup IP address to detect VPN servers, open proxies, web proxies, Tor exit nodes and data center ranges. The library reads the geo location information from [IP2Proxy database](https://www.ip2location.com/proxy-database)
+This module allows user to query an IP address if it was being used as open proxy, web proxy, VPN anonymizer and TOR exits. It lookup the proxy IP address from IP2Location BIN Data file. This data file can be downloaded at
+
+* Free IP2Proxy BIN Data: http://lite.ip2location.com
+* Commercial IP2Proxy BIN Data: http://www.ip2location.com/proxy-database
+
 
 For more details, please visit:
 [https://www.ip2location.com/ip2proxy/developers/ruby](https://www.ip2location.com/ip2proxy/developers/ruby)
@@ -44,4 +48,4 @@ i2p.close()
 ## Support
 
 Email: support@ip2location.com  
-URL: [http://www.ip2location.com](http://www.ip2location.com)
+URL: [http://www.ip2location.com](http://www.ip2location.com)