feat(example): Add an example

examples/serde-syntex-example/src/main.rs.in

@@ -0,0 +1,16 @@
+#[derive(Serialize, Deserialize, Debug)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+fn main() {
+    let point = Point { x: 1, y: 2 };
+    let serialized = serde_json::to_string(&point).unwrap();
+
+    println!("{}", serialized);
+
+    let deserialized: Point = serde_json::from_str(&serialized).unwrap();
+
+    println!("{:?}", deserialized);
+}