It is good to have instructions, but I would like to see these added to the user guide (we ask that each module or plugin put up a page with at minimum a single code example). When it is ready of course.

Your commit no-doubt has joda and netcdf jars listed as dependencies, so when you make a community module in GeoServer (turned on via a profile) it will consist of a single dependency to gt-netcdf resulting in geoserver being deployed with the required three jars.