changed api.Video() to api.video()

docs/quickstart.rst

@@ -52,7 +52,7 @@ Here come the most important part of this API - The Ultimate Video Object. With
 .. code-block:: python
 
 	>>> video_id = 'WzxSiEWK3cg'
-	>>> api.Video(video_id)
+	>>> api.video(video_id)
 	<Video id="WzxSiEWK3cg" title="PARIS | A380 LANDING 4K EXTENDED" author="High Pressure Aviation Films">
 
 There you go! You've just created a video Object with contains everything about the video. Suppose you have a video object with the name ``video`` on hand right now, let's see some examples of how we can use it:
@@ -201,4 +201,4 @@ This features hasn't quite finished yet, so I can't talk too much about it here.
 For more details on the playlist object, unfortunately there are no API reference for now. But this features will be completed as soon as I can, so stay tuned on it.
 
 Channel
--------
+-------