update readme to add latest commands

README.md

@@ -56,7 +56,7 @@ go install ./cmd/kd6ctl
 ### How to use
 
 ```shell
-kd6ctl help
+kd6ctl --help
 ```
 
 Will output a list of commands:
@@ -66,16 +66,23 @@ USAGE
   kd6ctl [flags] <subcommand>
 
 SUBCOMMANDS
+  version        Show version of kd6ctl API.
+  dumpreg        Dump the register values of CIS.
+  gain           Enables the gain control and sets the specified value 
   load           Load user settings.
   save           Save current settings into a user preset.
+  pattern        Decide test pattern.
   frequency      Change output frequency (in Mhz).
   format         Change output format.
   interpolation  Set interpolation on/off.
   dark           Dark correction on/off/adjust.
   white          White correction on/off/adjust/target.
-  led            Sets LEDs on sensor on or off.
+  led            Turn sensor LEDs on or off.
+  duty           Set LED duty illumination period register value. Valid range 0 to 4095.
+  cmd            Sends the specified command to sensor
 
 FLAGS
+  -log=false                     turn on debug logging
   -p /dev/corser/XtiumCLMX41_s0  port of KD6RMX sensor to use
 ```