fix issue with context of initialize with latest value call

fixes #20

bower.json

@@ -1,6 +1,6 @@
 {
     "name": "knockout-postbox",
-    "version": "0.4.0",
+    "version": "0.4.2",
     "main": "build/knockout-postbox.min.js",
     "dependencies": {
         "knockout": ">= 2.0"

build/knockout-postbox.js

@@ -1,4 +1,4 @@
-// knockout-postbox 0.4.1 | (c) 2013 Ryan Niemeyer |  http://www.opensource.org/licenses/mit-license
+// knockout-postbox 0.4.2 | (c) 2013 Ryan Niemeyer |  http://www.opensource.org/licenses/mit-license
 ;(function(factory) {
     //CommonJS
     if (typeof require === "function" && typeof exports === "object" && typeof module === "object") {
@@ -51,7 +51,7 @@
                 current = exports.topicCache[topic];
 
                 if (current !== undefined) {
-                    action(current.value);
+                    action.call(target, current.value);
                 }
             }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "knockout-postbox",
-  "version": "0.4.1",
+  "version": "0.4.2",
   "devDependencies": {
     "grunt": "~0.4.1",
     "grunt-contrib-uglify": "0.x.x",

spec/knockout-postbox.spec.js

@@ -56,17 +56,21 @@ describe("knockout-postbox", function(){
                 expect(callback).toHaveBeenCalledWith(newValue);
             });
 
+            it("should call the callback with the appropriate target as the context during initialization", function() {
+                ko.postbox.publish(topic, newValue);
+                var newSubscription = ko.postbox.subscribe(topic, callback, target, true);
+
+                expect(callback.mostRecentCall.object).toEqual(target);
+            });
+
             it("should not execute callback before publish", function() {
                 var newSubscription = ko.postbox.subscribe(topic, callback, target, true);
                 expect(callback).not.toHaveBeenCalled();
                 ko.postbox.publish(topic, newValue);
                 expect(callback).toHaveBeenCalledWith(newValue);
             });
 
-            describe("when passing as the third argument", function(){
-                beforeEach(function(){
-                });
-
+            describe("when passing as the third argument", function() {
                 it("should receive the last published value", function() {
                     ko.postbox.publish(topic, newValue);
                     var newSubscription = ko.postbox.subscribe(topic, callback, true);

src/knockout-postbox.js

@@ -50,7 +50,7 @@
                 current = exports.topicCache[topic];
 
                 if (current !== undefined) {
-                    action(current.value);
+                    action.call(target, current.value);
                 }
             }