add /api/version

README.md

@@ -123,6 +123,8 @@ Authentication: Bearer <token>
 
 Here's the API, in brief:
 
+Base URL looks like `https://example.com/api`.
+
 ```txt
 # Demo Mode Only
 DELETE /public/reset                                    Drop database and re-initialize

main.go

@@ -33,7 +33,7 @@ var (
 )
 
 func usage() {
-	ver()
+	fmt.Println(ver())
 	fmt.Println("")
 	fmt.Println("Use 'help <command>'")
 	fmt.Println("  help")
@@ -41,8 +41,8 @@ func usage() {
 	fmt.Println("  run")
 }
 
-func ver() {
-	fmt.Printf("%s v%s %s (%s)\n", name, version, commit[:7], date)
+func ver() string {
+	return fmt.Sprintf("%s v%s %s (%s)\n", name, version, commit[:7], date)
 }
 
 var defaultAddr = ":3000"
@@ -113,7 +113,7 @@ func main() {
 
 	switch args[1] {
 	case "version":
-		ver()
+		fmt.Println(ver())
 		os.Exit(0)
 		return
 	case "init":
@@ -186,6 +186,10 @@ func serve() {
 	r.Use(middleware.Logger)
 	r.Use(middleware.Recoverer)
 
+	r.Get("/api/version", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte(ver() + "\n"))
+	})
+
 	var pub keypairs.PublicKey = nil
 	if "" != runOpts.pub {
 		var err error