Fixed the link that was used to get the Auth Cookie from with the New One
from Google.

Now notifications are working again. However the entire auth module is
outdated and should be migrated to OAuth2.
Put repeated auth URL in a class variable

...and added a TODO about the other ones. there seems to be conflicting
information here.
Merge pull request #1 from mikedougherty/master

Put repeated auth URL in a class variable
Update README.md

Tweaking the new troubleshooting section