Added module loader

Author: Rene Merino

.DS_Store

@@ -1,4 +1,15 @@
-(function () {
+(function (root, factory) {
+    if (typeof define === 'function' && define.amd) {
+        // AMD.
+        define(['moment'], factory);
+    } else if (typeof module === 'object' && module.exports) {
+        // CommonJS-like
+        module.exports = factory(require('moment'));
+    } else {
+        // Browser globals (root is window)
+        factory(root.moment);
+    }
+}(this, function(moment) {
 
     function Timer(duration, attributes, callback) {
         this.timerDuration = duration;
@@ -8,7 +19,7 @@
         this.stopped = false;       // If stop() is called this variable will be used to finish the paused duration once it's started again.
         this.timer;
         this.startTick;
-        this.endTick; 
+        this.endTick;
 
         if (attributes.start) {
             if (attributes.wait > 0) {
@@ -52,7 +63,7 @@
                     return self.callback();
                 }, this.timerDuration);
             }
-            
+
             this.updateStartEndTickFromDuration(self.timerDuration);
             this.started = true;
 
@@ -102,7 +113,7 @@
             this.start();
             return true;
         }
-        
+
         return false;
     }
 
@@ -125,14 +136,14 @@
     Timer.prototype.isStopped = function () {
         return this.stopped;
     }
-    
+
     // define internal moment reference
     var moment;
 
     if (typeof require === "function") {
-        try { moment = require('moment'); } 
+        try { moment = require('moment'); }
         catch (e) {}
-    } 
+    }
 
     if (!moment && this.moment) {
         moment = this.moment;
@@ -157,8 +168,10 @@
         } else {
             throw new Error("First argument must be of type function or object.");
         }
-        
-        return new Timer(this.asMilliseconds(), attributes, callback);
+
+        return (function() {
+            return new Timer(this.asMilliseconds(), attributes, callback);
+        }.bind(this))();
     };
 
-})(this);
+}));