Update README.md

Author: ip2location

README.md

@@ -7,45 +7,9 @@ This module allows user to reverse search of IP address to detect VPN servers, o
 For more details, please visit:
 [https://www.ip2location.com/ip2proxy/developers/ruby](https://www.ip2location.com/ip2proxy/developers/ruby)
 
-# Usage
-You can check the **example.rb** file to learn more about usage.
+# Developer Documentation
+To learn more about installation, usage, and code examples, please visit the developer documentation at [https://ip2proxy-ruby.readthedocs.io/en/latest/index.html.](https://ip2proxy-ruby.readthedocs.io/en/latest/index.html)
 
-## BIN Database
-An outdated BIN database was provided in the library for your testing. You are recommended to visit the [links](#dependencies) to download the latest BIN database and save it in the ```rb``` folder.
-
-Below is the description of the functions available in the **BIN Database** lookup.
-
-|Method Name|Description|
-|---|---|
-|open|Open the IP2Proxy BIN data with **File I/O** mode for lookup.|
-|close|Close and clean up the file pointer.|
-|get_package_version|Get the package version (1 to 11 for PX1 to PX11 respectively).|
-|get_module_version|Get the module version.|
-|get_database_version|Get the database version.|
-|is_proxy|Check whether if an IP address was a proxy. Please see [Proxy Type](#proxy-type) for details. Returned value:<ul><li>-1 : errors</li><li>0 : not a proxy</li><li>1 : a proxy</li><li>2 : a data center IP address</li></ul>|
-|get_all|Return the proxy information in array.|
-|get_proxytype|Return the proxy type. Please visit <a href="https://www.ip2location.com/database/px11-ip-proxytype-country-region-city-isp-domain-usagetype-asn-lastseen-threat-residential-provider" target="_blank">IP2Location</a> for the list of proxy types supported|
-|get_country_short|Return the ISO3166-1 country code (2-digits) of the proxy.|
-|get_country_long|Return the ISO3166-1 country name of the proxy.|
-|get_region|Return the ISO3166-2 region name of the proxy. Please visit <a href="https://www.ip2location.com/free/iso3166-2" target="_blank">ISO3166-2 Subdivision Code</a> for the information of ISO3166-2 supported|
-|get_city|Return the city name of the proxy.|
-|get_isp|Return the ISP name of the proxy.|
-|get_domain|Return the domain name of proxy's IP address or domain name.|
-|get_usagetype|Return the ISP's usage type of proxy's IP address or domain name. Please see [Usage Type](#usage-type) for details.|
-|get_asn|Return the autonomous system number (ASN) of proxy's IP address or domain name.|
-|get_as|Return the autonomous system (AS) name of proxy's IP address or domain name.|
-|get_last_seen|Return the last seen days ago value of proxy's IP address or domain name.|
-|get_threat|Return the threat types reported to proxy's IP address or domain name. Please see [Threat Type](#threat-type) for details.|
-|get_provider|Returns the VPN service provider name if available.|
-
-## Web Service
-Below is the description of the functions available in the **Web Service** lookup.
-
-| Function Name | Description |
-|---|---|
-| Constructor | Expect 3 input parameters:<ol><li>IP2Proxy API Key.</li><li>Package (PX1 - PX11)</li></li><li>Use HTTPS or HTTP</li></ol> |
-| lookup | Return the proxy information in array.<ul><li>countryCode</li><li>countryName</li><li>regionName</li><li>cityName</li><li>isp</li><li>domain</li><li>usageType</li><li>asn</li><li>as</li><li>lastSeen</li><li>threat</li><li>proxyType</li><li>isProxy</li><li>provider</li><ul> |
-| get_credit | Return remaining credit of the web service account. |
 
 ### Proxy Type