title: Importing scrapy.conf.settings generates error
body: <p>Using scrapy version 0.16. Trying to create a standalone spider runnable from a script as per <a href="https://gist.github.com/484009" rel="nofollow">this gist</a>. Importing the above generates this:</p>
  
  <pre><code>    Traceback (most recent call last):
    File "./spiderctl.py", line 8, in &lt;module&gt;
      from scrapy.conf import settings
    File "/usr/local/lib/python2.6/dist-packages/scrapy/conf.py", line 4, in &lt;module&gt;
      from scrapy.project import crawler
  ImportError: cannot import name crawler
  </code></pre>
  
  <p>The file conf.py contains the line:</p>
  
  <pre><code>from scrapy.project import crawler
  </code></pre>
  
  <p>But the file scrapy.project is only a comment that the module is deprecated and users should instead implement the from_crawler class method. How do I implement this in the context of the code above?</p>