/* Features */ linky, subsections for feature details, Profile, Notif…

…ications with screenshots from snarfed/bridgy-fed#3

data/M/Mastodon.txt

@@ -24,17 +24,36 @@ IndieWeb Building Blocks that Mastodon supports:
 
 == Features ==
 (this section is a stub, please expand!)
-* ability to create an account / profile with
+
+Feature summary:
+* [[profile]] - ability to create an account / profile with
 ** photo
 ** bio (with autolinked URLs)
-* posts
+* [[posts]]
 ** [[notes]] up to 500 characters
 ** [[content warning]] to hide (part?) of a note, requiring a click to view
 ** ...
-* responses
+* [[responses]]
 ** [[favorite]] (star)
 ** boost - [[repost]]
 ** ...
+* [[notifications]]
+
+Specific feature details:
+
+=== Profile ===
+(stub)
+
+Mastodon profiles show various information:
+
+https://user-images.githubusercontent.com/778068/31188527-0f1a014a-a8ea-11e7-8893-0cc97c68526e.png
+
+=== Notifications ===
+(stub)
+
+Mastodon has a notifications page that shows various items such as when others react to your posts:
+
+https://user-images.githubusercontent.com/778068/31188595-47530aca-a8ea-11e7-9a34-498935f47cb0.png
 
 == Issues ==
 === Current ===