Update Simulation/Launch Bot gazebo

Simulation/Launch Bot gazebo

+Gazebo ohne alles
+roslaunch gazebo_ros empty_world.launch
+
+Init 
+~/catkin_ws$ source devel/setup.bash
+~/catkin_ws$ export TURTLEBOT3_MODEL=burger
+~/catkin_ws$ roslaunch turtlebot3_gazebo zylinder.launch
+
+Teleop
+~/catkin_ws$ source devel/setup.bash
+~/catkin_ws$ export TURTLEBOT3_MODEL=burger
+~/catkin_ws$ roslaunch turtlebot3_teleop turtlebot3_teleop_key.launch
+
+Notbremse
+~/catkin_ws$ source devel/setup.bash
+~/catkin_ws$ export TURTLEBOT3_MODEL=burger
+~/catkin_ws$ roslaunch turtlebot3_example turtlebot3_obstacle.launch
+
+My node 
+~/catkin_ws$ source devel/setup.bash
+~/catkin_ws/src/location_monitor/scripts$ rosrun location_monitor location_monitor_node.py
+