Merge pull request #153 from eparis/remove-useless-assignment

UsageTemple: remove useless variable assignment

command.go

@@ -251,7 +251,7 @@ func (c *Command) UsageTemplate() string {
 	if c.HasParent() {
 		return c.parent.UsageTemplate()
 	} else {
-		return `{{ $cmd := . }}Usage:{{if .Runnable}}
+		return `Usage:{{if .Runnable}}
   {{.UseLine}}{{if .HasFlags}} [flags]{{end}}{{end}}{{if .HasSubCommands}}
   {{ .CommandPath}} [command]{{end}}{{if gt .Aliases 0}}