title: Is it possible to use `content-for` to include stuff in page structure on Ember CLI?
body: <p>Currently Ember CLI generates an index page with some obscure helpers: <code>content-for</code> head, head-footer, body and body-footer.</p>
  
  <p>Is it possible for the app developers to leverage those helpers to include additional code to, say, the page <code>&lt;head&gt;</code>? The <a href="http://www.ember-cli.com/#appindexhtml" rel="nofollow">doc</a> is tiny and focused only on "addons can use this".</p>
  
  <p>I have a page with a very specific CSS and would be better if it was loaded through a separate <code>&lt;style&gt;</code>, but I wanted to include it in the page <code>head</code> tag...</p>