Add flags to usage.

cmd/step-ca/main.go

@@ -107,7 +107,9 @@ func main() {
 	app.HelpName = "step-ca"
 	app.Version = config.Version()
 	app.Usage = "an online certificate authority for secure automated certificate management"
-	app.UsageText = `**step-ca** <config> [**--password-file**=<file>] [**--issuer-password-file**=<file>] [**--resolver**=<addr>] [**--help**] [**--version**]`
+	app.UsageText = `**step-ca** <config> [**--password-file**=<file>] 
+[**--ssh-host-password-file**=<file>] [**--ssh-user-password-file**=<file>]
+[**--issuer-password-file**=<file>] [**--resolver**=<addr>] [**--help**] [**--version**]`
 	app.Description = `**step-ca** runs the Step Online Certificate Authority
 (Step CA) using the given configuration.
 See the README.md for more detailed configuration documentation.

commands/app.go

@@ -23,8 +23,9 @@ import (
 var AppCommand = cli.Command{
 	Name:   "start",
 	Action: appAction,
-	UsageText: `**step-ca** <config>
+	UsageText: `**step-ca** <config> [**--password-file**=<file>]
-[**--password-file**=<file>] [**--issuer-password-file**=<file>] [**--resolver**=<addr>]`,
+[**--ssh-host-password-file**=<file>] [**--ssh-user-password-file**=<file>]	
+[**--issuer-password-file**=<file>] [**--resolver**=<addr>]`,
 	Flags: []cli.Flag{
 		cli.StringFlag{
 			Name: "password-file",