title: Unable to run dev_appserver.py with gcloud
body: <p>I'm attempting to use the command <code>dev_appserver.py ./</code> from my application directory, but it's throwing the following error.</p>
  
  <pre><code>ERROR    2016-01-04 04:47:51,421 wsgi.py:263] 
  Traceback (most recent call last):
    File "/Users/Joshua/Scripts/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 240, in Handle
      handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
    File "/Users/Joshua/Scripts/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 299, in _LoadHandler
      handler, path, err = LoadObject(self._handler)
    File "/Users/Joshua/Scripts/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 85, in LoadObject
      obj = __import__(path[0])
    File "/Users/Joshua/Projects/inkren/skritter-api/main.py", line 2, in &lt;module&gt;
      from gcloud import datastore
  ImportError: No module named gcloud
  </code></pre>
  
  <p>I'm running a virtualenv that has gcloud installed and also have the gcloud sdk installed with the proper python component. The gcloud library is found when I run <code>python ./main.py</code>.</p>
  
  <pre><code># main.py
  
  import webapp2
  from gcloud import datastore
  
  
  class MainPage(webapp2.RequestHandler):
      def get(self):
          client = datastore.Client(dataset_id='my-project')
          self.response.headers['Content-Type'] = 'text/plain'
          self.response.write('Hello, World!')
  
  app = webapp2.WSGIApplication([
      ('/', MainPage),
  ], debug=True)
  </code></pre>
  
  <p>What I'd like to do is be able to run my code locally in the browser. Is there a way to get <code>dev_appserver.py</code> to recognize the gcloud library?</p>