AFQ writing to the input directory

[soichih]

This line was failing as we don't have write permission to the directory where we have input data.

AFQ/functions/AFQ_SegmentFiberGroups.m

Line 187 in a42e157

imwrite(makeMontage(im),fullfile(baseDir, 'SpatialNormalization.png'));

I think it would be better if any output to be stored under the current working directory, or inside the output directory.