Changed `catkin_metapackage's to `catkin_package's

Packages are packages, not metapackages. Fixed that.
Merge branch 'master' of github.com:cram-code/cram_highlevel
Merge pull request #26 from fairlight1337/master

Change all packages from `catkin_metapackage` to `catkin_package`.
Merge branch 'master' of github.com:gaya-/cram_highlevel