Move spotify.com from direct to proxy (#20)

* Remove spotify.com

Spotify is not blocked by GFW, but using it with a Chinese IP for more than two weeks on a non-premium account, will have the account disabled.

* Add spotify.com

factory/resultant/top500_direct.list

@@ -210,7 +210,6 @@ skype.com
 so-net.ne.jp
 softonic.com
 sports.yahoo.com
-spotify.com
 springer.com
 sputniknews.com
 standard.co.uk

factory/resultant/top500_proxy.list

@@ -171,6 +171,7 @@ slideshare.net
 smh.com.au
 soundcloud.com
 spiegel.de
+spotify.com
 ssl-images-amazon.com
 stackoverflow.com
 stanford.edu