Add the serialization example.

examples/02-serialization/src/main.rs

@@ -0,0 +1,30 @@
+#[macro_use] extern crate serde_json;
+extern crate splines;
+
+use serde_json::{Value, from_value};
+use splines::Spline;
+
+fn main() {
+  let value = json!{
+    [
+      {
+        "t": 0,
+        "interpolation": "linear",
+        "value": 0
+      },
+      {
+        "t": 1,
+        "interpolation": { "step": 0.5 },
+        "value": 1
+      },
+      {
+        "t": 5,
+        "interpolation": "cosine",
+        "value": 10
+      },
+    ]
+  };
+
+  let spline = from_value::<Spline<f32>>(value);
+  println!("{:?}", spline);
+}