Update README.md

Author: ip2location

README.md

@@ -9,22 +9,8 @@ You can access to the commercial databases from https://www.ip2location.com/prox
 For more details, please visit:
 [http://www.ip2location.com/ip2proxy/developers/c](http://www.ip2location.com/ip2proxy/developers/c)
 
-## Installation
-
-###  Unix/Linux
-    autoreconf -i -v --force
-    ./configure
-    make
-
-### Windows
-    Execute "vcvarsall.bat". (This file is part of Microsoft Visual C, not ip2location code) 
-    nmake -f Makefile.win
-
-### MacOS
-    autoreconf -i -v --force
-    export CFLAGS=-I/usr/include/malloc 
-    ./configure
-    make
+## Developer Documentation
+To learn more about installation, usage, and code examples, please visit the developer documentation at [https://ip2proxy-c.readthedocs.io/en/latest/index.html.](https://ip2proxy-c.readthedocs.io/en/latest/index.html)
 
 ## Testing
 
@@ -36,50 +22,6 @@ For more details, please visit:
 * Download free IP2Proxy LITE databases at [https://lite.ip2location.com](https://lite.ip2location.com)  
 * Download IP2Proxy sample databases at [https://www.ip2location.com/ip2proxy/developers](https://www.ip2location.com/ip2proxy/developers)
 
-## Methods
-
-Below are the methods supported in this library.
-
-| Method Name                                          | Description                                                  |
-| ---------------------------------------------------- | ------------------------------------------------------------ |
-| IP2Proxy_open                                        | Open the IP2Proxy BIN data with **File I/O** mode for lookup. |
-| IP2Proxy_open_csv                                    | Open the IP2Proxy CSV file for lookup. Slower performance.   |
-| IP2Proxy_open_mem\|IP2Proxy_set_lookup_mode          | Open the IP2Proxy BIN data with **Shared Memory** or **Memory Cache** mode to speed up lookup. |
-| IP2Proxy_close                                       | Close and clean up the file pointer.                         |
-| IP2Proxy_get_package_version                         | Get the package version (1 to 4 for PX1 to PX8 respectively). |
-| IP2Proxy_get_module_version\|IP2Proxy_version_string | Get the module version.                                      |
-| IP2Proxy_get_database_version                        | Get the database version.                                    |
-| IP2Proxy_is_proxy                                    | Check wether if an IP address was a proxy. 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> |
-| IP2Proxy_get_all                                     | Return the proxy information in array.                       |
-| IP2Proxy_get_proxy_type                              | Return the proxy type. Please visit <a href="https://www.ip2location.com/databases/px4-ip-proxytype-country-region-city-isp" target="_blank">IP2Location</a> for the list of proxy types supported |
-| IP2Proxy_get_country_short                           | Return the ISO3166-1 country code (2-digits) of the proxy.   |
-| IP2Proxy_get_country_long                            | Return the ISO3166-1 country name of the proxy.              |
-| IP2Proxy_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 |
-| IP2Proxy_get_city                                    | Return the city name of the proxy.                           |
-| IP2Proxy_get_isp                                     | Return the ISP name of the proxy.                            |
-| IP2Proxy_get_domain                                  | Return internet domain name associated with IP address range. |
-| IP2Proxy_get_usage_type                              | Return usage type classification of ISP or company.          |
-| IP2Proxy_get_asn                                     | Return autonomous system number (ASN).                       |
-| IP2Proxy_get_as                                      | Return autonomous system (AS) name.                          |
-| IP2Proxy_get_last_seen                               | Return proxy last seen in days.                              |
-| IP2Proxy_get_threat                                  | Return security threat reported.                             |
-| IP2Proxy_get_provider                                | Return name of VPN provider if available.                    |
-
-
-
-## Usage
-
-Open and read IP2Proxy binary database. There are 3 modes:
-
-1. IP2Proxy_open("SAMPLE.BIN") - File I/O reading. Slower look, but low resource consuming.
-2. IP2Proxy_open_csv("SAMPLE.CSV") - CSV parsing. Slowest, but convenient to use.
-3. IP2Proxy_set_lookup_mode(IP2ProxyObj, IP2PROXY_SHARED_MEMORY) - Stores whole IP2Proxy database into system memory. Lookup is possible across all applications within the system.  Extremely resources 
-   consuming. Do not use this mode if your system do not have enough 
-   memory.
-4. IP2Proxy_set_lookup_mode(IP2ProxyObj, IP2PROXY_CACHE_MEMORY) - Caches database into memory for faster lookup. Required high memory.
-
-
-
 ## Support
 
 Email: [email protected].