changed call to load_nii to load_untouch_nii
DOC: These functions have changed their names.
DOC: input variable that was not documented.
Merge pull request #75 from arokem/mrinit_docs

Mrinit docs
get inplane time series in 4D volume rather than looping over slices
replaced contents of readFileNifti.m with a call to niftiReadMatlab.m, and, inside niftiReadMatlab, replaced call to load_nii with call to load_untouch_nii
Merge pull request #73 from vistalab/readFileNiftiFix

changed call to load_nii to load_untouch_nii