Add comments in readme and help

Author: yuchenliu15

README.md

@@ -104,6 +104,7 @@ grab [options] [directory]
 | `--max-depth <depth>`    | Maximum depth for dependency resolution (`-1` for unlimited, default: `1`). Only effective with `--deps`.                                                                                            |
 | `--max-file-size <size>` | Maximum file size to include (e.g., `"100kb"`, `"2MB"`). No limit by default. Files exceeding the specified size will be skipped.                                                                    |
 | `--theme <name>`         | Set the UI theme. Available: catppuccin-latte, catppuccin-frappe, catppuccin-macchiato, catppuccin-mocha, rose-pine, rose-pine-dawn, rose-pine-moon, dracula, nord. (default: `"catppuccin-mocha"`). |
+| `--show-tokens`          | Show the number of tokens for each file in file tree. |
 
 ### 📖 Examples
 

internal/ui/help.go

@@ -54,6 +54,7 @@ const UsageText = `Usage:
     --theme <name>           Set the UI theme. Available: catppuccin-latte, catppuccin-frappe,
                              catppuccin-macchiato, catppuccin-mocha, rose-pine, rose-pine-dawn,
 	                           rose-pine-moon, dracula, nord. (default: "catppuccin-mocha").
+    --show-tokens            Show the number of tokens for each file in file tree.
 
   Examples:
     # Run interactively in the current directory