docs: jsdoc + travis auto build to gh-pages.
Merge pull request #127 from stephenplusplus/docs

docs: jsdoc + travis auto build to gh-pages.
docs: order steps to create account: fixes #138

*hat tip* @ryanseys
Merge branch 'master' of github.com:GoogleCloudPlatform/gcloud-node
Update tests to use setImmediate and done once