Use core-meta for google-cloud-config
Emphasize that <google-cloud-config> needs an ID
Rename go() method to create().

Because we'll then also have get, update and delete.
Merge pull request #14 from crhym3/rename-go-to-create

Rename go() to create()
Merge pull request #13 from crhym3/core-meta

Use core-meta for google-cloud-config