chore(example): update example and readme

README.md

@@ -89,6 +89,10 @@ Internally the `valueOf()` implementation returns `x` in first call, `y` in seco
 
 [![code preview](https://us-central1-code-snippet-to-svg.cloudfunctions.net/default/basics/vector/blob/master/examples/example.js?theme=atom_one_light&range=42-48)](https://github.com/basics/vector/blob/master/examples/example.js)
 
+### normalize only with arithmetic
+
+[![code preview](https://us-central1-code-snippet-to-svg.cloudfunctions.net/default/basics/vector/blob/master/examples/example.js?theme=atom_one_light&range=58-63)](https://github.com/basics/vector/blob/master/examples/example.js)
+
 ## immutable vector called Victor
 
 behaves exactly like Vector but code cant change its `x`, `y` and `z` axes.

examples/example.js

@@ -56,6 +56,11 @@ try {
   // error: Error: set x() not implemented
 }
 
+// normalize only with arithmetic
+const norm = calc(() => offsetA / offsetA.length);
+console.log(debug`norm: ${norm}`);
+// norm: { x: 0.967, y: 0.1658, z: 0.1934 }
+
 // creating vector inside calculation works, but has overhead
 const inlineVec = new Victor(() => new Victor(25, 30) / 2);
 console.log(debug`inlineVec: ${inlineVec}`);