Make serial port instructions clearer

readme.md

@@ -19,7 +19,7 @@ Tested on:
 Run the installer and point it to an installation of SDRSharp, this will copy the necessary files and register the plugin.
 
 ## Testing ##
-Start SDRSharp and check the plugin control panel is shown on the left side of the main window and 'Enable' is ticked.
+Start SDRSharp and check the plugin control panel is shown on the left side of the main window and 'Network' is ticked.
 
 Run:
 
@@ -29,7 +29,7 @@ You should get a JSON response showing the plugin name and version, for example:
 
     {"Name":"Net Remote","Version":"1.0.5282.28765"}
 
-Commands will also be read from the serial port set in the control panel, currently the port defaults to 115200 8N1.
+If 'Serial' is enabled in the control panel commands will be read from the serial port, currently the port defaults to 115200 8N1.
 
 ## Commands ##
 Commands are JSON formatted strings containing a *Command*, *Method* and  optional *Value* attributes. For example to set the current volume to 30: