title: Upgrading to Rails 4.2 issues
body: <p>I'm trying to upgrade to Rails 4.2 from Rails 4.1.9 and when I attempt to run the console or the server i get the following error. Any thoughts? I thought the html-scanner gem was included with Action::View</p>
  
  <pre><code>gems/activesupport-4.2.0/lib/active_support/dependencies.rb:274:in `require': cannot load such file -- action_view/vendor/html-scanner (LoadError)
  </code></pre>