Include the insecured ssh-key from vagrant repo.

Obviously this is required by vagrant.
Need to install virtualbox-guest-additions ...

to be able to mount vbox-shared folder.
Add scripts for building and for testing the box.

veewee is a very good helper for building boxed. But
there are still some steps to perform to get the final box.
Refactoring build-box.sh.

Create a function for getting config values from
VBoxManage.
Compress disk images after build.
Move installation of vbox-guest-adds & kernel into script.
No not hardcode server kernel in virtualbox.sh.
Remove installed desktop-kernel.

thatsamguy was right when implementing he auto_inst.cfg:
For any reason the desktop-kernel gets installed, too.
You you have an idea why and how to prevent this, please
submit a pull request.
Fix: kernel mod is not loaded in vbox-guest-addons 4.2.16.

Need to add an entry in modprobe.preload.d/.
Clean up more files.
Bringing latest mga3 changes to mga4:

- Clean up more files.
- Fix: kernel module is not loaded in vbox-guest-addons
  4.2.16.
- Remove installed desktop-kernel.
- Move installation of vbox-guest-adds & kernel into script.
Convert Readme files from markdown to reStructuredText.

IMHO reStructuredText ist *much* more readable and *much*
easier to write then markdown.
Fix typos.
Add installation and build instructions.

Build instructions are for building the boxes of course.