Uninstall Command for the Plugin Framework

I would like to be able to cleanly uninstall all artifacts associated with a plugin and the plugin itself from the command line.

I'm not sure how many people want to work with the plugins yet, but as they grow in use and popularity, I'm sure this functionality will be desired by more people than just me.

Today, the solution is to run the git command to remove all the files and directories that are un-versioned.