update README

README.md

@@ -1,50 +1,39 @@
 # DDNS
 
-This application enables automatically updating DNS records for various providers.
+DDNS is an application that enables the automatic updating of DNS records for various providers.
 
-## Features
-
-* Automatically detect the current IP.
-    * Both IPv4 and IPv6 are supported.
-    * IP resolution depends on the selected service.
-        * ipify (default)
-* Update DNS records in the selected provider.
-    * Porkbun
-* Native (Linux)
+Supported providers:
+- Porkbun
 
 ## Build
 
 Execute `./gradlew assemble`.  
 The resulting binary will be located in `./build/bin/releaseExecutable/`.
 
-Removing the extension from the binary and adding it to `/usr/local/bin/` enables the use of `ddns` in the terminal.
-
 ## Usage
 
 The following command updates all A and AAAA DNS records in Porkbun for `example.com` and `test.example.com`.
 
 ```
 ddns porkbun \ 
-    --key=... \
-    --secret-key=... \
+    --key=<key> \
+    --secret-key=<secret key> \
     --domain=example.com \
     --subdomain= \
     --subdomain=test
 ```
 
-Optionally, a file can be used to declare one or more configurations.  
+Alternatively, a file can be used to declare one or more configurations.  
 The above example can be declared as follows.
 
 ```
 porkbun
-key=...
-secret-key=...
+key=<key>
+secret-key=<secret key>
 domain=example.com
 subdomain=
 subdomain=test
 ```
 
-To use this config file, execute the command `ddns --config=...`.
+To use this config file, execute the command `ddns --config=<config file>`.  
 By default, the config file is `/etc/ddns.conf`.
-
-This process can be automated using systemd or cron.