add more minimal configuration language

Author: jenweber

_posts/2014-04-05-overview.md

@@ -18,7 +18,7 @@ There are thousands of JavaScript libraries made specifically for Ember.
 We call them addons.
 Ember CLI’s [addon system](/extending/#developing-addons-and-blueprints)
 provides a way to create reusable units of code, share components and styling, 
-extend the build tooling, and more.
+extend the build tooling, and more — all with a minimal configuration.
 To view a complete list of addons, visit 
 [EmberObserver](https://www.emberobserver.com/).
 You can still use your favorite npm packages directly too.