Merge pull request ouster-lidar#4 from hooic/patch-1

update readme.md

readme.md

@@ -25,7 +25,7 @@
 ## Running the Sample ROS Node
 * Set up the ROS environment with `source /path/to/myworkspace/devel/setup.bash` in a new terminal for each command below
 * For use with a running sensor:
-  - To publish OS1 data as ROS topic `roslaunch ouster_ros os1.launch os1_hostname:=<os1_hostname> os1_udp_dest=<udp_data_dest_ip>` where `<os1_hostname>` can be the hostname or IP of the OS1 device and `<udp_data_dest_ip>` is the IP to which the sensor should send data
+  - To publish OS1 data as ROS topic `roslaunch ouster_ros os1.launch os1_hostname:=<os1_hostname> os1_udp_dest:=<udp_data_dest_ip>` where `<os1_hostname>` can be the hostname or IP of the OS1 device and `<udp_data_dest_ip>` is the IP to which the sensor should send data
   - To record raw sensor output, run `rosbag record /os1_node/imu_packets /os1_node/lidar_packets` in another terminal
   - To visualize output, run `rviz -d /path/to/ouster_ros/viz.rviz` in another terminal
 * For use with recorded sensor data: