update docs

CHANGELOG.md

@@ -17,6 +17,7 @@ Before any major/minor/patch is released all test units will be run to verify th
 - Option class
 - Device classes
 - EQ class
+- FX class
 
 ## [3.3.0] - 2024-06-29
 

README.md

@@ -440,6 +440,21 @@ $vmr.command.Load("path/to/filename.xml")
 $vmr.command.RunMacrobuttons()
 ```
 
+### Fx
+
+The following Fx commands are available:
+
+- Reverb.on: bool
+- Reverb.ab: bool
+- Delay.on: bool
+- Delay.ab: bool
+
+for example:
+
+```powershell
+$vmr.fx.reverb.ab = $false
+```
+
 ### Patch
 
 The following Patch commands are available: