Pass variable from initializer to handlebars .hbs (Discourse Plugin, maybe Ember in general)

In a .hbs file I am creating a navigation menu with various items. One of the items will only display if a user is a pro (boolean).

var pro is a variable set in my initializer and I need to pass it my .hbs file for the purposes of a conditionally showing one of the menu items.

In Ember, how is this accomplished?