DOC: provide code samples in introduction #30
Description
https://pydata-google-auth.readthedocs.io/en/latest/intro.html would benefit from having a code sample for creating a credentials object with GCP scopes for use in BigQuery.
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https://pydata-google-auth.readthedocs.io/en/latest/intro.html would benefit from having a code sample for creating a credentials object with GCP scopes for use in BigQuery.