Update 'plugins'

plugins.md

@@ -20,11 +20,15 @@ Example
         parts = path.split('/')
         if len(parts) != 3:
            return None
+        date = parts[0]
+        title = parts[1]
+        filename = parts[-1]
+        extension = filename.split('.')[-1].lower()
         return {
-            'date': parts[0],
-            'title': parts[1],
-            'extension': parts[-1].split('.')[-1].lower(),
-            'type': parts[-1].split('.')[-1].lower() in ('avi', 'mov', 'webm') and 'video' or None
+            'date': date,
+            'title': title,
+            'extension': extension,
+            'type': filename.split('.')[-1].lower() in ('avi', 'mov', 'webm', 'dv') and 'video' or None
         }
     
     def example_path(client):