Code cleanup from review comments

cmd/delete.go

@@ -24,7 +24,7 @@ import (
 
 // deleteCmd represents the delete command
 var deleteCmd = &cobra.Command{
-	Use:   "delete <name>",
+	Use:   "delete [name]",
 	Short: "DANGER: Delete a private key from your system",
 	RunE:  runDeleteCmd,
 }

cmd/get.go

@@ -22,7 +22,7 @@ import (
 
 // getCmd represents the get command
 var getCmd = &cobra.Command{
-	Use:   "get <name>",
+	Use:   "get [name]",
 	Short: "Get details of one key",
 	Long:  `Return public details of one local key.`,
 	RunE:  runGetCmd,

cmd/new.go

@@ -33,7 +33,7 @@ const (
 
 // newCmd represents the new command
 var newCmd = &cobra.Command{
-	Use:   "new <name>",
+	Use:   "new [name]",
 	Short: "Create a new public/private key pair",
 	Long: `Add a public/private key pair to the key store.
 The password muts be entered in the terminal and not

cmd/recover.go

@@ -22,7 +22,7 @@ import (
 
 // recoverCmd represents the recover command
 var recoverCmd = &cobra.Command{
-	Use:   "recover <name>",
+	Use:   "recover [name]",
 	Short: "Change the password for a private key",
 	RunE:  runRecoverCmd,
 }

cmd/update.go

@@ -24,7 +24,7 @@ import (
 
 // updateCmd represents the update command
 var updateCmd = &cobra.Command{
-	Use:   "update <name>",
+	Use:   "update [name]",
 	Short: "Change the password for a private key",
 	RunE:  runUpdateCmd,
 }