Make default BT-backend OS-dependent

On linux/mac: MATLAB's virtual serial port implementation
On windows: Instrument Control toolbox

source/CommunicationInterface.m

@@ -200,7 +200,11 @@ classdef CommunicationInterface < handle
             defaultSerPort = '/dev/rfcomm0';
             defaultBTDevice = 'EV3';
             defaultBTChannel = 1;
+            if(ispc)
+                defaultBackend = 'instrumentControl';
+            else
                 defaultBackend = 'serial';
+            end
             defaultDebug = false;
             
             % Define anonymous functions that will return whether given value in varargin is valid

source/btBrickIO.m

@@ -48,7 +48,6 @@ classdef btBrickIO < BrickIO
     end 
     
     methods
-        %function brickIO = btBrickIO(debug,serialPort,backend)
         function brickIO = btBrickIO(brickIO, varargin)
             %btBrickIO.btBrickIO Create a btBrickIO object
             %
@@ -64,7 +63,11 @@ classdef btBrickIO < BrickIO
             p.addOptional('deviceName', 'EV3');
             p.addOptional('channel', 1);
             p.addOptional('timeOut', 10);
+            if(ispc == 1)
+                p.addOptional('backend', 'instrumentControl');
+            else
                 p.addOptional('backend', 'serial');
+            end
             
             p.parse(varargin{:});