Warrning message 'Please login / register' will be shown when api_key and api_secret are empty. Before module showed warrning 'Please login / register' if connection with api_key and api_secret was not successfull but it did not do API connection if both api parameters were empty so warrning message was not shown if both api parameters were empty - fixed now.
Merge pull request #6 from DonatasL/warrningmsg

Warning message 'Please login / register' will be shown when api_key and api_secret are empty.