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- [x] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/google-api-python-client/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
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Fixes #1082 🦕

Add available scopes link in start.md --> Authentication Section 2 (Authorized API Access)

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [x] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/google-api-python-client/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)

Fixes #1089 🦕

…thenticated user (#1088)

Fixes #1071  🦕

Note: I changed `scopes=['profile', 'email'],` to `scopes=['openid', 'https://www.googleapis.com/auth/userinfo.email', 'https://www.googleapis.com/auth/userinfo.profile'],` in the examples because I received a warning that the scope has changed.

> `Warning: Scope has changed from "email profile" to "https://www.googleapis.com/auth/userinfo.email openid https://www.googleapis.com/auth/userinfo.profile".`.

🤖 I have created a release \*beep\* \*boop\* 
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### [1.12.6](https://www.github.com/googleapis/google-api-python-client/compare/v1.12.5...v1.12.6) (2020-11-16)


### Documentation

* Change error parsing to check for 'message' ([#1083](https://www.github.com/googleapis/google-api-python-client/issues/1083)) ([a341c5a](https://www.github.com/googleapis/google-api-python-client/commit/a341c5a5e31ba16da109658127b58cb7e5dbeedd)), closes [#1082](https://www.github.com/googleapis/google-api-python-client/issues/1082)
* Update oauth docs to include snippet to get email address of authenticated user ([#1088](https://www.github.com/googleapis/google-api-python-client/issues/1088)) ([25fba64](https://www.github.com/googleapis/google-api-python-client/commit/25fba648ea647b62f2a6edc54ae927c1ed381b45)), closes [#1071](https://www.github.com/googleapis/google-api-python-client/issues/1071)
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).