Updated the project

Greetings! This gem has been an amazing assistance for me, helping me make many a website w/ simple Google account authentication systems! Noticing that it has been a VERY long time since it was updated and that it had some extraneous bits here and there, I decided to pitch in, clean it up, and update it!

Hope it helps! :palm_tree: 

If want to test out my version, feel free to do so!