Ubuntu: Start the Virtual Machine Additions during startup

If you followed the last post, you might want to configure the vm-additions to run at startup. The Ubuntu-way of making this happen is documented here.

The short version is as follows: (note the trailing ... "S .")

$ sudo update-rc.d vmadd start 51 S .
$ sudo update-rc.d vmadd-heartbeat 51 S.
$ sudo update-rc.d vmadd-timesync 51 S.