Tips and Notes Boxes

Feature Request Summary: 

Zendesk Guide should have standard formatting option for yellow notes and blue tips boxes in its articles. 

Description/Use Cases: 

You've used yellow note and blue tip boxes all over your own Zendesk Guide Help site

Given you find yourself using this a lot - wouldn't it make sense to have these features built into the Guide article as a standard formatting feature, in the same way the code box is? I've seen alternatives out there but they don't look as clean and effective and it seems like an easy way to improve your product for the end user.