Merge pull request #17 from kusor/master

Fixes required to work with node v0.6 and v0.8
Added SDC_CLI_KEY_ID to the list of ENV vars to export.
Ready for v6.5.5 release.
Forgot to remove the private flag before npm publish
Done with v6.5.5 release, prep for future development.
Enable token (delegated) authentication
countMachines is erroniously checking the request object, rather than results.headers for headers
add token auth to node-smartdc