Added Todo list to README

Zakirov Artur · Zakirov Artur · commit 683116898bc9 · 2016-11-14T00:16:52.000+03:00
diff --git a/README.md b/README.md
@@ -229,9 +229,15 @@ SELECT * FROM query
  'black'          | color
  'black' & 'hole' | color
 (2 rows)
+```
 
+## Todo
 
-```
+- Allow multiple additional information (lexemes positions + timestamp).
+- Add support for arrays.
+- Improve ranking function to support TF/IDF.
+- Improve insert time.
+- Improve GENERIC WAL to support shift (PostgreSQL core changes).
 
 ## Authors
 
