add new executable to control CameraInfo with interactive marker

An interactive marker to publish camera info.

you can control pose of the camera info via interactive marker and change camera parameters (width, height, f)
via dynamic_reconfigure.

![screenshot from 2014-09-10 22 07 06](https://cloud.githubusercontent.com/assets/40454/4217789/9a673c12-38eb-11e4-9cc2-a5e6272044df.png)