face_recognition package usage is unclear

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What steps exactly do I have to run in what order for face_recognition package?

I assumed the following, which doesn't seem to be working for me.

1. Publish /camera/image_raw I'm using shows clearly my face
2. rosrun face_recognition Fserver
3. rosrun face_recognition Fclient
4. rostopic pub -1 /fr_order face_recognition/FRClientGoal -- 2 "your_name" or other rostopic command that are mentioned in README.md.

Also, if successful, what result can I expect? In general, well-accepted ROS package description has "published topics" or similar section (e.g. http://wiki.ros.org/libuvc_camera#Pub... ).

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