Add CLI guides to the navbar (#576)

* link to the cli docs from the landing page

* add cli guides to the navbar

Author: Jen Weber

app/controllers/application.js

@@ -5,12 +5,16 @@ const links = [{
   type: 'dropdown',
   items: [{
     href: 'https://guides.emberjs.com',
-    name: 'Guides',
+    name: 'Ember.js Guides',
     type: 'link'
   }, {
     href: 'https://emberjs.com/api',
     name: 'API Reference',
     type: 'link'
+  }, {
+    href: 'https://cli.emberjs.com',
+    name: 'CLI Guides',
+    type: 'link'
   }, {
     type: 'divider'
   }, {

app/templates/project-version/index.hbs

@@ -5,7 +5,7 @@
     from the dropdown menu. Ember has core methods used in any app, while Ember Data has 
     documentation of the built-in library for making requests to a back end.
     If you're looking for documentation of the command line tool used to generate files, build your 
-    app, and more, visit <a href="https://ember-cli.com/">ember-cli</a>. The latest
+    app, and more, visit <a href="https://cli.emberjs.com/">ember-cli</a>. The latest
     testing API is available at 
     <a href="https://github.com/emberjs/ember-test-helpers/blob/master/API.md">ember-test-helpers</a>.
   </p>