title: Ember CLI - Firebase is not defined after installing with npm
body: <p>After taking the following steps in the command line to install Ember CLI, Firebase, and EmberFire with node, I am getting an error saying that Firebase is not defined in app/adapter/application.js</p>
  
  <pre><code>npm install -g ember-cli
  
  npm install -g bower
  
  npm install -g phantomjs
  
  ember new my-new-app
  
  cd my-new-app
  
  ember server
  </code></pre>
  
  <p>At this point I can see my ember app with the default output of “Welcome to Ember.js” at localhost:4200</p>
  
  <pre><code>npm install firebase
  npm install —save ember-fire
  ember generate adapter application
  </code></pre>
  
  <p>Then in app/adapter/application.js, removed “export default DS.RESTAdapter.extend({});” and pasted "export default DS.FirebaseAdapter.extend({
    firebase: new Firebase('https://.firebaseio.com')
  });” with my own firebase URL</p>
  
  <pre><code>ember server
  </code></pre>
  
  <p>Then I get an error in terminal:</p>
  
  <pre><code>Serving on http://0.0.0.0:4200
  
  lionworxs/adapters/application.js: line 4, col 17, 'Firebase' is not defined.
  
  1 error
  
  ===== 1 JSHint Error
  
  Path or pattern "vendor/firebase/firebase.js" did not match any files
  Error: Path or pattern "vendor/firebase/firebase.js" did not match any files
  </code></pre>
  
  <p>I have tried creating the firebase.js file in the directory specified above, but it leads to an entirely new string of errors so I thought that I missed a step in my installation. Do I need to manually include Firebase somewhere in my application even after "installing" it via command line?</p>