Updated Genre (markdown)

Genre.md

@@ -1 +1,39 @@
-## Genre
+### Retrieving genre  
+**URI**: https://icarus-demo.com/api/v1/genre/2  
+**Method**: Get  
+**Content type**: application/json  
+**Authorization**: Bearer ``token``  
+**Response body**:  
+```Json
+{
+    "id" : 2,
+    "genre" : "Hip-Hop",
+    "song_count" : 2
+}
+```
+  
+### Retrieving genres
+**URI**: https://icarus-demo.com/api/v1/genre  
+**Method**: Get  
+**Content type**: application/json  
+**Authorization**: Bearer ``token``  
+**Response body**:  
+```Json
+[
+    {
+        "id" : 1,
+        "genre" : "Indie",
+        "song_count" : 1
+    },
+    {
+        "id" : 2,
+        "genre" : "Hip-Hop",
+        "song_count" : 2
+    },
+    {
+        "id" : 3,
+        "genre" : "Jazz",
+        "song_count" : 1
+    }
+]
+```