Patch for /includes/Google.php

```
Fix for issue where scope is not sent for Google authorization
```

Original issue reported on code.google.com by `stephen....@villagesoftware.co.uk` on 27 Feb 2015 at 4:24

Attachments:
- [Google.php.patch](https://storage.googleapis.com/google-code-attachments/simple-php-oauth/issue-2/comment-0/Google.php.patch)
