Issue #2 -- each now calls iterator with (value, key, list) when iterating over javascript objects

test/collections.js

@@ -26,7 +26,7 @@ $(document).ready(function() {
     answers = [];
     var obj = {one : 1, two : 2, three : 3};
     obj.constructor.prototype.four = 4;
-    _.each(obj, function(pair){ answers.push(pair.key); });
+    _.each(obj, function(value, key){ answers.push(key); });
     equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
     
@@ -136,7 +136,7 @@ $(document).ready(function() {
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
     
     var numbers = _.toArray({one : 1, two : 2, three : 3});
-    equals(_.pluck(numbers, '0').join(', '), 'one, two, three', 'object flattened into array');
+    equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
   });
   
   test('collections: size', function() {