Google+ Login
Get Google+ User Activities

After Login, you can now load the activities of a user as a PHP array.
Handle Expired Google Token

Simplistic error handling for Google API. This commit discards Google
OAuth token for any HTTP error when trying to load a user's
activities...
Some documentation update
Merge branch 'google+' into facebook
Get User's Profile Pic

may want a better method name, though...
Work with Google's Expiring Tokens

If Google's token expires, we may still have the user array in the
session variables. This cannot prevent us from logging into Google.
Merge branch 'google+'
Merge branch 'facebook'