Update README.

README.md

@@ -1,6 +1,6 @@
 # TIL - Today I Log
 
-`til` is a TUI for a logbook/diary.
+`til` is a TUI for a markdown logbook/diary.
 
 ## Run
 
@@ -21,12 +21,27 @@ Available options:
   --editor STRING          Editor to open markdown files (default: "vi")
 ```
 
+### Keybindings
+
+| Keybinding | Description |
+| ---------- | ----------- |
+| `Esc` | exit |
+| `q` | exit |
+| `h` | help |
+| `r` | refresh current entry |
+| `J` | select day before |
+| `K` | select day after |
+| `j` | increase scroll |
+| `k` | decrease scroll |
+| `e` | edit entry |
+
 ## Home Manager module
 
 ```nix
 home-manager.users.my-user = {
   imports = [inputs.til.homeManagerModules.default];
   programs.til.enable = true;
   programs.til.directory = "~/code/journal";
+  programs.til.editor = "nvim";
 }
 ```