Centralize configuration.
Consolidate provisioning scripts.
[aws] Refactor AWS template to use consolidated config and scripts.
[digitalocean] Refactor DigitalOcean template to use consolidated config and scripts.
[vagrant] Refactor vagrant to use consolidated config and scripts.
Remove unused scripts and config.
[vagrant] Add Vagrantfile to make testing boxes easier.
Add build script and configuration to simplify image management.
Update README with new build instructions and image links.