Node linking added

client/app/scripts/utils/async-utils.js

@@ -0,0 +1,16 @@
+
+export function waterfall(series, target, cb) {
+  function next(result) {
+    const fn = series.shift();
+    if (fn) {
+      try {
+        fn(result, next);
+      } catch (e) {
+        cb(e);
+      }
+    } else {
+      cb(null, result);
+    }
+  }
+  next(target, next);
+}