Ember CLI Addon: Initializer won't run

I created an ember simple auth authenticator addon and I'm attempting to register it in the initializer of the addon. However, when I install the addon the initializer never runs and the authenticator is not found.

In my addon, I ran the ember g initializer authentication command which added the initializer to the app/ directory. Inside, I added the following.

import MyAuthenticator from 'my-simple-auth/authenticators/my-oauth';

export default {
  name:       'authentication',
  before:     'simple-auth',
  initialize: function(container, application) {
    console.log("my.initializer"); // does not output to console
    container.register('authenticator:my-auth', MyAuthenticator);
  }
};

When I attempt to authenticate in my route, I get an error message stating that is has not be initialized. Other than removing my bower.js file and creating the authenticator, I left everything else as is.

Are there some specific steps I need to take in order to create an initializer in an ember addon, or do I need to create the initializer in each of my apps?