Restructured and added AWS single-host example

Back to something resembling the v1 structure (or is this the *new* v1
structure?), added an aws single-host template and submoduled the aws
stdlib components.
Updating README
Renaming template.json -> cf.json
Temporarily switch to simple params, add template dirs
Additional logging for hooks, new payload directory

This makes more sense to me. We send the contents of the payload
directory to the instances, and nothing else!  Also made Vagrant more
portable.
Changing submodule name and location
Fixing submodule
Fixing paths in CF template
Fixing log directory for hook scripts
Updated aws submodule
Merge pull request #6 from agperson/master

Hopefully-final structure for format 1 cloudlets