Added the Friction Matter component to set the static, air and normal friction a body receives.

Author: photonstorm

v3/src/physics/matter-js/components/Friction.js

@@ -0,0 +1,26 @@
+var Friction = {
+
+    setFriction: function (value)
+    {
+        this.body.friction = value;
+
+        return this;
+    },
+
+    setFrictionAir: function (value)
+    {
+        this.body.frictionAir = value;
+
+        return this;
+    },
+
+    setFrictionStatic: function (value)
+    {
+        this.body.frictionStatic = value;
+
+        return this;
+    }
+
+};
+
+module.exports = Friction;