Update README.md

README.md

@@ -77,7 +77,12 @@ roslaunch ivo_1_gazebo ivo_gazebo.launch
 roslaunch ivo_2dnav_gazebo ivo_navigation.launch
 ```
 
-In both cases the robot will be spawned in an empty world and the tuck arms motion will be executed. When both arms are at the home position the robot is ready. With the second command, it is possible to give navigation goals to the robot using the RVIZ interface.
+* To launch the IVO model in Gazebo with the default navigation stack but without the RVIZ, execute the following command:
+```
+roslaunch ivo_2dnav_gazebo ivo_navigation.launch rviz:=false
+```
+
+In all cases the robot will be spawned in an empty world and the tuck arms motion will be executed. When both arms are at the home position the robot is ready. With the second command, it is possible to give navigation goals to the robot using the RVIZ interface.
 
 By default, only PAL provided worlds are available. To launch the simulated IVO robot with an IRI environment, add the following parameters to the previous launch commands:
 ```