Update build process and version embedding.

main.go

@@ -7,7 +7,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Version = "dev"
+var Version = ""
 
 // Global flags available to all commands
 var overwrite bool
@@ -225,7 +225,7 @@ func main() {
 		Use:   "version",
 		Short: "Show version information",
 		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Printf("lab-ca version: %s\n", Version)
+			fmt.Printf("lab-ca version: %s\n", getVersionDescription())
 		},
 	}
 	rootCmd.AddCommand(versionCmd)
@@ -235,15 +235,23 @@ func main() {
 	}
 }
 
+func getVersionDescription() string {
+	if Version == "" {
+		return "no version information was compiled in"
+	}
+	return Version
+}
+
 func printMainHelp() {
 	fmt.Printf("lab-ca - Certificate Authority Utility\n")
-	fmt.Printf("Version: %s\n", Version)
+	fmt.Printf("Version: %s\n", getVersionDescription())
 	fmt.Println()
 	fmt.Println("Usage:")
 	fmt.Println("  lab-ca <command> [options]")
 	fmt.Println()
 	fmt.Println("Available commands:")
 	fmt.Println("  initca     Generate a new CA certificate and key")
+	fmt.Println("  list       List issued certificates")
 	fmt.Println("  issue      Issue a new certificate")
 	fmt.Println("  provision  Provision certificates from a batch file (HCL)")
 	fmt.Println("  revoke     Revoke a certificate by name or serial number")