Adds an ssh keypair for packer.

This allows for a repo clone and build. You shouldn't use it in practice.
Adds the canonical version of coreos-install.

This is the script which installs Core OS to disk (used after booting the live
disc).
Adds a default cloud-config file to use our ssh key.
Adds the Packer template to boot the ISO & install to disk.
Removes .localdomain from cloud-config.

It'll get an 'unknown_domain' appended anyway.
Documents the build and configuration procedure.
Adds a post-processor to compress the disk image.