* updated README

* both func and hook check for callable.

README.md

@@ -16,8 +16,41 @@ Schedule the asynchronous execution of a function by calling `async` from within
 ```python
 async(func,*args,hook=None,**kwargs)
 ```
-The optional hook function gets the finished task object as its first argument after execution
+####Basic example
+```python
+from django_q import async
 
+# math.copysign(2,-2)
+async('math.copysign', 2, -2)
+
+# also
+from math import copysign
+
+async(copysign, 2, -2)
+
+```
+#### Result example
+```python
+from django_q import async, result
+
+# create the task
+task_id = async('math.copysign', 2, -2)
+
+# get the result
+task_result = result(task_id)
+
+# result returns None if the task has not been executed yet
+# so it makes more sense to use a hook:
+from hooks import print_result
+
+async('math.modf', 2.5, hook='hooks.print_result')
+
+# hooks.py
+def print_result(task):
+    print(task.result)
+
+
+```
 ### Management commands
 
 #### `qcluster`