feat: update tests

README.md

@@ -8,6 +8,11 @@ Zig is a general-purpose programming language and toolchain for maintaining robu
 
 <br><br>
 
+Run:
+```
+% zig run hello.zig
+```
+
 
 Build:
 ```

helloworld.zig

@@ -1,6 +1,8 @@
 const std = @import("std");
+const print = @import("std").debug.print;
 
 pub fn main() void {
     std.debug.print("Hello, world!\n", .{});
+    print("Hello, world!\n", .{});
 }