rosrun demo_teleop key_teleop.py --persist /cmd_vel:=/bebop/cmd_vel
rostopic pub --once /bebop/land std_msgs/Empty
rostopic pub --once /bebop/takeoff std_msgs/Empty
catkin_make --pkg=papillon
catkin_make -DCMAKE_BUILD_TYPE=Debug
roslaunch bebop_driver bebop_node.launch