Promises (first look)

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Small fixes

vendors/Q/design/q1.js

@@ -0,0 +1,26 @@
+
+var defer = function () {
+    var pending = [], 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;
+            } else {
+                throw new Error("A promise can only be resolved once.");
+            }
+        },
+        then: function (callback) {
+            if (pending) {
+                pending.push(callback);
+            } else {
+                callback(value);
+            }
+        }
+    }
+};
+