Cleaned up formating for sorting device code
Refactored out the siren entity building from device_resource, and placed it into machine_config. This way it can be reused across argo resources.
Merge pull request #6 from zettajs/device-refactor

Refactored out the siren entity building from device_resource.
Added api resoures dir, passing in zetta server to http server
Merge branch 'master' of github.com:zettajs/zetta-runtime into api-test

Conflicts:
	lib/device_resource.js
Added a module that defines zetta custom http rels. /devices is returning proper local devices.
Added root resource
Added servers resource, added full representation of device in servers resource