RSVP.Queue should work without new.

lib/rsvp/queue.js

@@ -18,6 +18,10 @@ var Queue = function() {
     fulfill,
     reject;
 
+  if (!(this instanceof Queue)) {
+    return new Queue();
+  }
+
   function canceller() {
     for (var i = 0; i < promise_list.length; i++) {
       promise_list[i].cancel();
@@ -65,8 +69,6 @@ var Queue = function() {
 
     return this;
   };
-
-  return promise;
 };
 
 Queue.prototype = Object.create(Promise.prototype);

test/tests/extension_test.js

@@ -1803,6 +1803,16 @@ describe("`RSVP.Queue`", function () {
       assert(promise instanceof RSVP.Queue);
       assert(promise instanceof RSVP.Promise);
     });
+
+    it('should work without `new`', function(done) {
+      var promise = RSVP.Queue()
+        .push(function() { return 'value'; });
+
+      promise.then(function(value) {
+        assert.equal(value, 'value');
+        done();
+      });
+    });
   });
 
   describe("`push`", function () {