報錯：
ResourceNotFound: rosbridge_server
ROS path [0]=/opt/ros/kinetic/share/ros
ROS path [1]=/home/ybox/robot_ws/src
ROS path [2]=/home/ybox/robot_3_ws/src
ROS path [3]=/home/ybox/catkin_ws/src
ROS path [4]=/opt/ros/kinetic/share
其他博客的解決方法是
sudo apt-get install ros-indigo-rosbridge-server
然而還是有問題：
E: Unable to locate package ros-kinetic-rosbridge-sever
要考慮ubuantu的版本，因爲我此時使用的版本已經是16.04了，所以要用
sudo apt-get install ros-kinetic-rosbridge_server