Change default scope to new profile scope

I've tested this with the following commands after authenticating:

```
gapi.client.load("plus", "v1")
...
gapi.client.plus.people.get({"userId": "me"}).execute(function(r) { console.log(r); })
```
Which correctly returned my profile information. (provided the Google+ API is activated in the developers console)

Btw: It might be worth adding a note to the description of the element, that multiple scopes should be space-delimited