Notifications types
Add regular notification Fades out after a certain amount of time, can be set for each notification.
Add sticky notification Doesn't run on a fade timer. Just sits there until the user manually removes it by clicking on the (X).
Add notification without image
Add a white notification has a 'gritter-light' class_name applied to it.
Callbacks
Add notification (with callbacks)
Add a sticky notification (with callbacks)
Max 3 notifications
Add notification with max of 3 If there are 3 messages already on screen, it won't show another one.