Update README

README.md

@@ -24,41 +24,48 @@ Inspired by [urfave/cli](https://github.com/urfave/cli) Go package.
 const std = @import("std");
 const cli = @import("zig-cli");
 
-var gpa = std.heap.GeneralPurposeAllocator(.{}){};
-const allocator = gpa.allocator();
-
+// Define a configuration structure with default values.
 var config = struct {
     host: []const u8 = "localhost",
     port: u16 = undefined,
 }{};
 
-var host = cli.Option{
-    .long_name = "host",
-    .help = "host to listen on",
-    .value_ref = cli.mkRef(&config.host),
-};
-var port = cli.Option{
-    .long_name = "port",
-    .help = "port to bind to",
-    .required = true,
-    .value_ref = cli.mkRef(&config.port),
-};
-var app = &cli.App{
-    .command = cli.Command{
-        .name = "short",
-        .options = &.{ &host, &port },
-        .target = cli.CommandTarget{
-            .action = cli.CommandAction{ .exec = run_server },
-        },
-    },
-};
-
 pub fn main() !void {
-    return cli.run(app, allocator);
+    var r = try cli.AppRunner.init(std.heap.page_allocator);
+
+    // Create an App with a command named "short" that takes host and port options.
+    const app = cli.App{
+        .command = cli.Command{
+            .name = "short",
+            .options = &.{
+                // Define an Option for the "host" command-line argument.
+                .{
+                    .long_name = "host",
+                    .help = "host to listen on",
+                    .value_ref = r.mkRef(&config.host),
+                },
+
+                // Define an Option for the "port" command-line argument.
+                .{
+                    .long_name = "port",
+                    .help = "port to bind to",
+                    .required = true,
+                    .value_ref = r.mkRef(&config.port),
+                },
+
+            },
+            .target = cli.CommandTarget{
+                .action = cli.CommandAction{ .exec = run_server },
+            },
+        },
+    };
+    return r.run(&app);
 }
 
+// Action function to execute when the "short" command is invoked.
 fn run_server() !void {
-    std.log.debug("server is listening on {s}:{}", .{ config.host, config.port });
+    // Log a debug message indicating the server is listening on the specified host and port.
+    std.log.debug("server is listening on {s}:{d}", .{ config.host, config.port });
 }
 ```