Add mapping package to setup script

[ValRat]

Just a reminder to do this sometime in the future:
Add the package dependency ros-kinetic-grid-map && laser_geometry to both the setup script and the CI script if applicable so that project compiles for everyone once #52 gets merged in.

[garethellis0]

Adding this to the setup script should be easy, just add it to install_dependencies. CI actually (should) do all the dependencies just based off the CMake files (testing needed)

[ValRat]

Seems like all you gotta do is put them as dependencies under package.xml 👍

[garethellis0]

Sweet! 😃