Update plusgallery.js

Updated flickr calls to use ssl (https instead of http). Flickr API no longer returns requests on http.
Bug Fix to Options Being Overwritten

Fixed issue where if passing options (apiKey, type etc) it would remove / ignore these values, and try to parse only from the data-x tags. 
Now it uses the options passed unless it finds a data tag in which case it will use that tag instead.
Replaced Alerts With Throws

Throws can be caught and handled by the user to handle behavior more explicitly where as alerts don't offer this flexibility.
Removed some debug code.
Merge pull request #21 from Pause-Inc/master

Bug Fix for Flickr