Merged N+ physics in and tidied up the Docs folder and logos.

Phaser/particles/NumericalIntegration.ts

@@ -0,0 +1,33 @@
+/// <reference path="../_definitions.ts" />
+
+module Phaser.Particles {
+
+    export class NumericalIntegration {
+
+        constructor(type) {
+            this.type = ParticleUtils.initValue(type, ParticleManager.EULER);
+        }
+
+        type;
+
+        integrate(particles, time, damping) {
+            this.eulerIntegrate(particles, time, damping);
+        }
+
+        eulerIntegrate(particle, time, damping) {
+            if (!particle.sleep)
+            {
+                particle.old.p.copy(particle.p);
+                particle.old.v.copy(particle.v);
+                particle.a.multiplyScalar(1 / particle.mass);
+                particle.v.add(particle.a.multiplyScalar(time));
+                particle.p.add(particle.old.v.multiplyScalar(time));
+                if (damping)
+                    particle.v.multiplyScalar(damping);
+                particle.a.clear();
+            }
+        }
+
+    }
+
+}