all: update the CLI usage in the README

There are three places for command usage: one in main Go doc, one in the
program usage, and one in README.
If we changes the flags we need to update three of them, and sometimes
we forgot.
To simplify, we remove the one in the Go doc main program.

2 files changed, 29 insertions, 32 deletions

diff --git a/README.md b/README.md
index d051ba7..cab739e 100644
--- a/README.md
+++ b/README.md
@@ -9,8 +9,11 @@ markup format.
 
 As showcase, the following websites are build using ciigo,
 
-* [kilabit.info](https://kilabit.info)
-* [golang-id.org](https://golang-id.org)
+* [kilabit.info](https://kilabit.info) -
+  [Source code](https://git.sr.ht/~shulhan/kilabit.info).
+
+* [golang-id.org](https://golang-id.org) -
+  [Source code](https://git.sr.ht/~shulhan/golang-id-web).
 
 
 ##  ciigo as CLI
@@ -21,30 +24,47 @@ markup files, as HTML files.
 ###  Usage
 
 ```
-$ ciigo [-template <file>] [-exclude <regex>] convert <dir>
+ciigo [-template <file>] [-exclude <regex>] convert <dir>
 ```
 
-Scan the "dir" recursively to find markup files (.adoc) and convert them into
-HTML files.
+Scan the "dir" recursively to find markup files (.adoc or .md) and convert
+them into HTML files.
 The template "file" is optional, default to embedded HTML template.
 
 ```
-$ ciigo [-template <file>] [-exclude <regex>] [-out <file>] generate <dir>
+ciigo [-template <file>] [-exclude <regex>] [-out <file>] \
+	[-package-name <string>] [-var-name <string>] \
+	embed <dir>
 ```
 
-Convert all markup files inside directory "dir" recursively and then
-embed them into ".go" source file.
+Convert all markup files inside directory "dir" recursively and then embed
+them into ".go" source file.
 The output file is optional, default to "ciigo_static.go" in current
 directory.
+The package name default to main.
+The variable name default to memFS.
+
+```
+ciigo help
+```
+
+Print the usage.
 
 ```
-$ ciigo [-template <file>] [-exclude <regex>] [-address <ip:port>] serve <dir>
+ciigo [-template <file>]  [-exclude <regex>] [-address <ip:port>] \
+    serve <dir>
 ```
 
 Serve all files inside directory "dir" using HTTP server, watch
 changes on markup files and convert them to HTML files automatically.
 If the address is not set, its default to ":8080".
 
+```
+ciigo version
+```
+
+Print the current ciigo version.
+
 
 ##  ciigo as library
 
diff --git a/cmd/ciigo/main.go b/cmd/ciigo/main.go
index 9b5184d..d4d4fc9 100644
--- a/cmd/ciigo/main.go
+++ b/cmd/ciigo/main.go
@@ -3,29 +3,6 @@
 
 // ciigo is a CLI to convert, embed, and/or serve a directory that contains
 // markup files, as HTML files.
-//
-// # Usage
-//
-// The following section describe how to use ciigo CLI.
-//
-//	ciigo [-template <file>] [-exclude <regex>] convert <dir>
-//
-// Scan the "dir" recursively to find markup files and convert them into HTML
-// files.
-// The template "file" is optional, default to embedded HTML template.
-//
-//	ciigo [-template <file>] [-exclude <regex>] [-out <file>] embed <dir>
-//
-// Convert all the markup files inside directory "dir" recursively and then
-// embed them into ".go" source file.
-// The output file is optional, default to "ciigo_static.go" in current
-// directory.
-//
-//	ciigo [-template <file>] [-exclude <regex>] [-address <ip:port>] serve <dir>
-//
-// Serve all files inside directory "dir" using HTTP server, watch changes on
-// markup files and convert them to HTML files.
-// If the address is not set, its default to ":8080".
 package main
 
 import (