GoogleCloudPlatform/gcloud-node — pull request #164 by stephenplusplus (2014-09-01 17:16:05+00:00)
Title: storage: fix credentials issue.

Previously, if a user wanted to generate a signed URL, there was no guarantee a credentials object would have already been generated. By itself, generating a signed URL doesn't require a network connection, thus the uncertainty that we would have already fetched a token. This change requires a valid credentials object to exist before returning the `credentials` object.