设置小车为主机 本地为从机
安装flycapture：
https://www.ptgrey.com/tan/10548
安装 pointgrey：
http://wiki.ros.org/pointgrey_camera_driver
本地启动 roscore
ubuntu 14:
roslaunch pointgrey_camera_driver camera.launch
ubuntu 16:
roslaunch pointgrey_camera_driver camera.launch camera_serial:=xxx
16 运行 image_view
http://wiki.ros.org/image_view#image_view.2BAC8-diamondback.image_view.2BAC8-image
14 运行 rqt_image_view:
http://wiki.ros.org/rqt_image_view
