sendPOSI command change (double for lat/lon/h) (#111)

* Updated POSI to use doubles for lat/lon/alt, as step size for floats was unacceptably large at high longitudes.

MATLAB/MonitorExample/MonitorExample.m

@@ -11,9 +11,9 @@ Socket = openUDP();
 while 1
     posi = getPOSI(0, Socket);
     ctrl = getCTRL(0, Socket);
-     
+
     fprintf('Loc: (%4f, %4f, %4f) Aileron:%2f Elevator:%2f Rudder:%2f\n', ...
     posi(1), posi(2), posi(3), ctrl(2), ctrl(1), ctrl(3));
     pause(0.1);
 end
-closeUDP(Socket);
+closeUDP(Socket);