Call catkin_package() in romeo_sensors

If you don't call `catkin_package()`, `${CATKIN_PACKAGE_SHARE_DESTINATION}` never gets set. This results in your files getting installed to the system root partition (`/`) instead of `/opt/ros/indigo/share/romeo_sensors`.

This is a major packaging bug.

Example of breakage: http://csc.mcs.sdsmt.edu/jenkins/job/ros-indigo-romeo-sensors_binaryrpm_heisenbug_x86_64/1/console

Thanks,

--scott