 your Ember app, you'll likely run into common scenarios that aren't addressed by Ember itself,
such as authentication or using SASS for your stylesheets.
Ember CLI provides a common format called <a href="#toc_addons">Ember Addons</a> for distributing reusable libraries
to solve these problems.
Additionally, you may want to make use of front-end dependencies like a CSS framework
or a JavaScript datepicker that aren't specific to Ember apps.
Ember CLI supports installing these packages through the standard 