Ember Binding changes from 1.6 to 1.11?

I was using Ember 1.6 on an app I'm developing and decided it was time to update, but now I have a bunch of deprecation warnings, so I'm trying to solve them all. One of them is the fact that "contentBinding" is now supposed to be "content" but when I change it to "content" it's not binding... So what's the correct syntax to bind now?

PS: If you have different tips about removing all these deprecations please leave them in the comments.