Getting Started Clarifications and Example Code File (#904)

* added URI link to README getting started

* revised comment

* added alternate module installation instruction

* installation troubleshooting comment

* scope clarification comment

* added playlist_add_items.py to examples folder

* reformatted changelog edits

* Relocated added contributions to added section in Changelog

* removed unnecessary library installation instruction

* Clarified alternative installation instruction

examples/playlist_add_items.py

@@ -0,0 +1,13 @@
+# Add a list of items (URI) to a playlist (URI)
+
+import spotipy
+from spotipy.oauth2 import SpotifyOAuth
+
+sp = spotipy.Spotify(auth_manager=SpotifyOAuth(client_id="YOUR_APP_CLIENT_ID",
+                                               client_secret="YOUR_APP_CLIENT_SECRET",
+                                               redirect_uri="YOUR_APP_REDIRECT_URI",
+                                               scope="playlist-modify-private"
+                                                ))
+
+sp.playlist_add_items('playlist_id', ['list_of_items'])
+

examples/show_artist_top_tracks.py

@@ -1,4 +1,5 @@
 # shows artist info for a URN or URL
+# scope is not required for this function
 
 from spotipy.oauth2 import SpotifyClientCredentials
 import spotipy