Merge pull request #288 from kennethreitz/patch-1

Consistent quotes

docs/quickstart.rst

@@ -18,7 +18,7 @@ A minimal Flask application looks something like this::
 
     @app.route('/')
     def hello_world():
-        return "Hello World!"
+        return 'Hello World!'
 
     if __name__ == '__main__':
         app.run()