Update README.md

Author: balis

examples/SchedulerDemo/README.md

@@ -1,12 +1,17 @@
 # Using scheduler API in Hyperflow workflows
 
-A scheduler in general makes two decisions: (1) *when* (at which point in time) and (2) *where* (on which node) to run a *workflow task*. To this end, two API functions are provided:
+A scheduler in general makes two decisions: (1) *when* (at which point in time) and (2) *where* (on which node) to run a *workflow task*. To this end, three API functions are provided:
 
 ```
 let node = await scheduler.getTaskExecutionPermission(context.appId, context.procId);
 ```
 This function will wait until the scheduler permits to execute the task (*when*) and return the node name on which the task should be executed (*where*).
 
+```
+scheduler.addTaskItem(taskItem, taskFunction2Cb)
+```
+This is an asynchronous alternative of `getTaskExecutionPermission`, also enabling the scheduler to [agglomerate tasks](https://github.com/hyperflow-wms/hyperflow/wiki/Task-agglomeration). See documentation in the code for details.
+
 ```
 scheduler.notifyTaskCompletion(context.appId, context.procId);
 ```