Updated Google scopes and endpoint

Updated Google scopes since userinfo.email and userinfo.profile are deprecated. Also, updated endpoint to use people.get as recommended per Google.

Reference: https://developers.google.com/+/api/auth-migration#changes
Please put the parentheses back. In addition to PSR-2, I am using the additional Symfony coding standards as rules for this library: http://symfony.com/doc/current/contributing/code/standards.html

"Use parentheses when instantiating classes regardless of the number of arguments the constructor has"