adding nature of code examples

java/examples/Books/Nature of Code/introduction/RandomWalkPVector/RandomWalkPVector.pde

@@ -0,0 +1,24 @@
+// Random Walker (No Vectors)
+// Daniel Shiffman <http://www.shiffman.net>
+// The Nature of Code
+
+Walker w;
+
+void setup() {
+  size(400,400);
+  frameRate(30);
+
+  // Create a walker object
+  w = new Walker();
+
+}
+
+void draw() {
+  background(255);
+  // Run the walker object
+  w.walk();
+  w.render();
+}
+
+
+