Promises (first look)

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Small fixes

vendors/Q/design/q2.js

@@ -0,0 +1,33 @@
+
+var Promise = function () {
+};
+
+var isPromise = function (value) {
+    return value instanceof Promise;
+};
+
+var defer = function () {
+    var pending = [], value;
+    var promise = new Promise();
+    promise.then = function (callback) {
+        if (pending) {
+            pending.push(callback);
+        } else {
+            callback(value);
+        }
+    };
+    return {
+        resolve: function (_value) {
+            if (pending) {
+                value = _value;
+                for (var i = 0, ii = pending.length; i < ii; i++) {
+                    var callback = pending[i];
+                    callback(value);
+                }
+                pending = undefined;
+            }
+        },
+        promise: promise
+    };
+};
+