Version 2.0
Task 02 has been done.
Passed gradient check for multi-channels
	modified:   DeepLearnToolbox-master/DeepLearnToolbox-master/CNN/cnnbp.m
	modified:   DeepLearnToolbox-master/DeepLearnToolbox-master/CNN/cnnff.m
	modified:   DeepLearnToolbox-master/DeepLearnToolbox-master/CNN/cnnsetup.m
	modified:   DeepLearnToolbox-master/DeepLearnToolbox-master/tests/test_cnn_gradients_are_numerically_correct.m