Merge pull request #3842 from Gallaecio/documentation-coverage

Document scrapy.crawler.Crawler.stop()

docs/topics/api.rst

@@ -99,6 +99,8 @@ how you :ref:`configure the downloader middlewares
 
         Returns a deferred that is fired when the crawl is finished.
 
+    .. automethod:: stop
+
 .. autoclass:: CrawlerRunner
    :members:
 

scrapy/crawler.py

@@ -111,6 +111,8 @@ class Crawler(object):
 
     @defer.inlineCallbacks
     def stop(self):
+        """Starts a graceful stop of the crawler and returns a deferred that is
+        fired when the crawler is stopped."""
         if self.crawling:
             self.crawling = False
             yield defer.maybeDeferred(self.engine.stop)