feat: bin example now references the local example_lib

example_bin/src/main.rs

@@ -1,3 +1,11 @@
+use example_lib::*;
+
 fn main() {
     println!("Hello, world!");
+
+    let result = add(1, 1);
+    assert_eq!(result, 2);
+
+    let result = sub(1, 1);
+    assert_eq!(result, 0);
 }