update readme

Author: 42LM

README.md

@@ -6,19 +6,20 @@ This branch shows the minimal setup needed for providing and using a zig library
 In your zig project folder (where `build.zig` is located), run:
 
 ```sh
-zig fetch --save "git+https://github.com/42LM/zig-package-manager-example#3198f56a617c66ac6077da8c991a2f31a1fefbea"
+zig fetch --save "git+https://github.com/42LM/zig-package-manager-example#minimal"
 ```
 
 Then, in your `build.zig`'s `build` function, add the following before
 `b.installArtifact(exe)`:
 
 ```zig
-    const hello = b.dependency("hello", .{
+    const hello = b.dependency("zig_package_manager_example", .{
         .target = target,
         .optimize = optimize,
     });
 ```
 
+exe
 ```zig
     const exe = b.addExecutable(.{
         .name = "foo",
@@ -32,3 +33,21 @@ Then, in your `build.zig`'s `build` function, add the following before
         }),
     });
 ```
+
+lib
+```zig
+    const foo_lib = b.addModule("foo_lib", .{
+        .root_source_file = b.path("src/foo_lib.zig"),
+        .target = target,
+        .optimize = optimize,
+        .imports = &.{
+            .{ .name = "hello", .module = hello.module("hello") },
+        },
+    });
+
+    const lib = b.addLibrary(.{
+        .linkage = .static,
+        .name = "foo_lib",
+        .root_module = foo_lib,
+    });
+```