Fix sheets to use `response.data` instead of `response[0]`
Fix sheets to use `response.data` instead of `response[0]`

Change is required because of the following breaking change in google-api-nodejs-client: https://github.com/google/google-api-nodejs-client/blob/474bed78474516ecbb3774f42712063c847f86e8/MIGRATING.md

urbancups/node-sheets