docs(ComponentRouter): it is unlikely ever to appear on bower or CDN

docs/content/guide/component-router.ngdoc

@@ -467,8 +467,8 @@ to display list and detail views of Heroes and Crises.
 
 ## Install the libraries
 
-It is easier to use [yarn](https://yarnpkg.com) to install the **Component Router** module.
-For this guide we will also install AngularJS itself via yarn:
+It is easier to use [Yarn](https://yarnpkg.com) or [npm](https://www.npmjs.com) to install the
+**Component Router** module. For this guide we will also install AngularJS itself via Yarn:
 
 ```bash
 yarn init

src/ngComponentRouter/Router.js

@@ -10,7 +10,7 @@
  *
  * @installation
  *
- * Currently, the **Component Router** module must be installed via `npm`/`yarn`, it is not yet available
+ * Currently, the **Component Router** module must be installed via `npm`/`yarn`, it is not available
  * on Bower or the Google CDN.
  *
  * ```bash