GooglePlusBot regexp modify

Google plus new pattern: ```Google \(\+.*\)```
```/Google \(\+.*\)/.test('Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20110814 Firefox/6.0 Google (+)')``` => true
```/Google \(\+.*\)/.test('Google (+https://developers.google.com/+/web/snippet/)')``` => true