Update readme.

README.md

@@ -57,6 +57,30 @@ mwtchahrd -i <IP> -p <PORT> [-c <CHANNEL>] [-d] [-u]
 - `-u, --ui_only`  
   Only display frames with a UI payload. When this flag is set, frames that are not UI are skipped.
   
+- `-b, --uip <UIP>`
+  Send UDP to what IP address (e.g. 127.0.0.1) [default: 127.0.0.1].
+  
+- `-k, --uport <UPORT>`
+  Send UDP to what port (e.g. 8000; 55555 disables UDP) [default: 55555].
+  
+- `-s, --spotter <SPOTTER>`            
+  Spotter callsign (e.g. W1CDN).
+  
+- `-o, --spothole`                     
+  Spot UI frames to a Spothole server.
+  
+- `-O, --spothole-alt <SPOTHOLE_ALT>` 
+  Provide a different URL than https://spothole.app/api/v1/spot.
+  
+- `-f, --freq <FREQ>`                 
+  Spotting frequency [default: 14105000].
+
+- `-h, --help`                         
+  Print help.
+  
+- `-V, --version`                      
+  Print version.
+
 ## Examples
 
 ### Monitoring All Frames
@@ -83,6 +107,12 @@ Monitor only UI frames:
 mwtchahrd -i 127.0.0.1 -p 8000 -u
 ```
 
+### Spotting to [Spothole.app](https://spothole.app) API
+
+```bash
+cargo run -- --ip 192.168.0.6 --port 8000 --spotter W1CDN --spothole --freq 14105000
+```
+
 ## Code Overview
 
 - **Validation Functions:**