List email addresses for user

## Endpoint
`GET /user/emails`.

### Docs
[List email addresses for user](https://developer.github.com/v3/users/emails/#list-email-addresses-for-a-user)

## Expected Response
`200 OK`

### Example JSON Payload
```json
[
  {
    "email": "octocat@github.com",
    "verified": true,
    "primary": true,
    "visibility": "public"
  }
]
```