tow misspelts

[maijianhu]

1. A Task SHOULD NOT accept a Request object in any of its functions. It can take anything in its funtions parameters but never a Request object. This will keep free to use from anwyhere, and can be tested independently.
2. The secret of making the testing and debugging easy, is not onnly in the organization of the tests and pre defined responsiblity of the components but also in the decoupling of your code.