调整about信息显示 (#92)

* 优化usage显示信息

* 更新版本信息显示功能，去除进程名显示

* 更新测试用例

* 调整about信息显示

* 调整about显示模板

clop_version_about_test.go

@@ -10,7 +10,7 @@ import (
 )
 
 // 测试显示信息, 普通命令
-func Test_Version_Show2(t *testing.T) {
+func Test_Version_Show(t *testing.T) {
 	type show struct {
 		Max int `clop:"short;long" usage:"max threads"`
 	}
@@ -19,20 +19,10 @@ func Test_Version_Show2(t *testing.T) {
 	cmd := New([]string{"-h"}).SetProcName("Test_Version_Show").SetVersion("v0.0.2").SetExit(false).SetOutput(&buf)
 	cmd.MustBind(&show{})
 
-	assert.NotEqual(t, strings.Index(buf.String(), "v0.0.2"), -1)
 	assert.NotEqual(t, strings.Index(buf.String(), "print version information"), -1)
 	assert.NotEqual(t, strings.Index(buf.String(), "print the help information"), -1)
 }
 
-// 测试显示信息
-func Test_Version_Show(t *testing.T) {
-	var buf bytes.Buffer
-	cmd := New([]string{"-h"}).SetProcName("Test_Version_Show").SetVersion("v0.0.2").SetExit(false).SetOutput(&buf)
-	cmd.MustBind(&git{})
-
-	assert.NotEqual(t, strings.Index(buf.String(), "v0.0.2"), -1)
-}
-
 // 测试about信息
 func Test_About_Show(t *testing.T) {
 

help_tmpl.go

@@ -61,18 +61,11 @@ func (h *Help) output(w io.Writer) error {
 	return tmpl.Execute(w, *h)
 }
 
-var usageDefaultTmpl = `
-{{- $ShowUsageDefault := .ShowUsageDefault}}
-{{- if gt (len .Version) 0}}
-  {{- .ProcessName}} {{.Version}}
-{{end}}
+var usageDefaultTmpl = `{{- $ShowUsageDefault := .ShowUsageDefault}}{{- if gt (len .About) 0}}
+{{- .About}}
 
-{{- if gt (len .About) 0}}
-	{{- .About}}
 {{end}}
-
-{{- if or (gt (len .Flags) 0) (gt (len .Options) 0) (gt (len .Args) 0) (gt (len .Subcommand) 0)}}
-Usage:
+{{- if or (gt (len .Flags) 0) (gt (len .Options) 0) (gt (len .Args) 0) (gt (len .Subcommand) 0)}}Usage:
     {{if gt (len .ProcessName) 0}}{{.ProcessName}} {{end}}
 {{- if gt (len .Flags) 0}}[Flags] {{end}}
 {{- if gt (len .Options) 0}}[Options] {{end}}