title: object has no attribute 'API' error in falcon
body: <p>I am using <code>python 2.7.6</code> on <code>ubuntu 14.04</code> with falcon web framework and trying to run simple hello world program. But it gives the following error while running this example. Any idea about this? </p>
  
  <p><strong>Code :</strong></p>
  
  <pre><code>import falcon
  
  class ThingsResource(object):
      def on_get(self, req, resp):
          """Handles GET requests"""
          resp.status = falcon.HTTP_200
          resp.body = 'Hello world!'
  
  # falcon.API instances are callable WSGI apps
  wsgi_app = api = falcon.API()
  
  # Resources are represented by long-lived class instances
  things = ThingsResource()
  
  # things will handle all requests to the '/things' URL path
  api.add_route('/hello', things)
  </code></pre>
  
  <p><strong>Error:</strong></p>
  
  <pre><code>Traceback (most recent call last):
    File "falcon.py", line 1, in &lt;module&gt;
      import falcon
    File "/home/naresh/Desktop/PythonFramework/falcon.py", line 10, in &lt;module&gt;
      wsgi_app = api = falcon.API()
  AttributeError: 'module' object has no attribute 'API'
  </code></pre>