Link to proxies doc, solves #449

spotipy/client.py

@@ -81,7 +81,8 @@ class Spotify(object):
         :param auth_manager:
             SpotifyOauth object or SpotifyClientCredentials object
         :param proxies:
-            Definition of proxies (optional)
+            Definition of proxies (optional).
+            See Requests doc https://2.python-requests.org/en/master/user/advanced/#proxies
         :param requests_timeout:
             Tell Requests to stop waiting for a response after a given
             number of seconds