Update README.

Author: jburhenn

README.rst

@@ -77,6 +77,11 @@ If you have already have installed the Cayenne agent service via the Cayenne das
       ::
       
         sudo service myDevices stop
+        
+   d) Optionally, disable the Cayenne service from starting at boot.
+      ::
+       
+        sudo systemctl disable myDevices
   
 3. Run this agent module in place of the Cayenne agent service, instead of from the command line.
    ::
@@ -85,7 +90,7 @@ If you have already have installed the Cayenne agent service via the Cayenne das
 
 Other potential issues caused by running this agent along side the Cayenne service:
 
-* File/folder permissions issues - The permissions for files and folders used by this agent, including ``/var/log/myDevice``, ``/etc/myDevices``, ``/var/run/myDevices`` and files inside those folders, could conflict with the permissions set by the agent service installed from Cayenne. To get around this issue you can manually modify the file and folder permissions, reinstall the agent, or run the agent as a service as explained above.
+* File/folder permissions issues - The permissions for files and folders used by this agent, including ``/var/log/myDevices``, ``/etc/myDevices``, ``/var/run/myDevices`` and files inside those folders, could conflict with the permissions set by the agent service installed from Cayenne. To get around this issue you can manually modify the file and folder permissions, reinstall the agent, or run the agent as a service as explained above.
 * Agent update - The Cayenne agent will automatically update itself if a new agent becomes available which can overwrite the installation of this agent. You may need to reinstall this agent if that happens. To completely disable updates you can add the line ``DoUpdates = false`` to ``/etc/myDevices/AppSettings.ini``.
 
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