write something

readme.md

@@ -39,7 +39,7 @@ Always use `C-g` when you mess up
   - `C-k` kill line
   - `C-_` undo
   - `M-_` redo
-  - `C-x u` undo-tree
+  - `C-x u` undo-tree then `q` to choose
   - `C-x space` column select
   - `C-c ;` comment/uncomment
   - `C-s` search forwards
@@ -57,6 +57,9 @@ Always use `C-g` when you mess up
 - `C-xc` exit editor
 - `f4` nav-tab
 - `C-c n` search for pattern in a project (directory) 
+- `C-xb` open list of buffers, then `x` to kill
+- 'C-x b' swith buffers
+
 
 # Spelling
   - `f6` change dictionary