Compare pixel array parsing results with dcm2niix

[ZviBaratz]

@matthew-brett will test against dcm-qa to find differences in parsing results.

[neurolabusc]

@ZviBaratz not sure why this got assigned to me. You can add any dcm_qa tests as submodules and use AppVeyor or Travis to test - see dcm2niix for examples. Since dcm_qa always saves uncompressed NIfTI data (as different GZ compression levels/libraries lead to file differences), you can always check the pixel array with a simple shell script using a terminal command like cmp -i 352 A.nii B.nii and checking the return value, though you could do this in Python as well.

[ZviBaratz]

@neurolabusc thanks for the guidance! My mistake regrading assignment, I was playing around with the new project boards and somehow that happened.