remove unneccesary whitespaces, shorten some lines, and add name to contibutors

examples/artist_discography.py

@@ -35,7 +35,7 @@ def show_artist_albums(id):
     unique = set()  # skip duplicate albums
     for album in albums:
         name = album['name'].lower()
-        if not name in unique:  
+        if not name in unique:
             print(name)
             unique.add(name)
             show_album_tracks(album)

examples/contains_a_saved_track.py

@@ -10,7 +10,7 @@ if len(sys.argv) > 2:
     username = sys.argv[1]
     tids = sys.argv[2:]
 else:
-    print("Usage: %s username track-id ..." % (sys.argv[0],))	
+    print("Usage: %s username track-id ..." % (sys.argv[0],))
     sys.exit()
 
 token = util.prompt_for_user_token(username, scope)

examples/my_top_tracks.py

@@ -26,6 +26,6 @@ if token:
         for i, item in enumerate(results['items']):
             print (i, item['name'], '//', item['artists'][0]['name'])
         print ()
-        
+
 else:
     print("Can't get token for", username)

examples/title_chain.py

@@ -60,4 +60,4 @@ if __name__ == '__main__':
     import sys
     title = ' '.join(sys.argv[1:])
     make_chain(sys.argv[1].lower())
-    
+

examples/user_public_playlists.py

@@ -1,6 +1,6 @@
 # Gets all the public playlists for the given
 # user. Uses Client Credentials flow
-# 
+#
 
 import sys
 import spotipy