fix: make dcm2nii compatible with node for efficient execution, improve docs
fix: use two files
doc: no support for directories
Merge remote-tracking branch 'upstream/master' into enh/dcm2nii

* upstream/master:
  updated changelog
  0.9.2 release
  cleanup
  Added VtoMat vista interface and updated CHANGES and autogenerated tests accordingly
  added test for Vnifti2Image interface
  updated CHANGES log
  Created interface for vimage2nifti command from lipvia vista package
  fixed mcflirt mean image output
Merge pull request #782 from satra/enh/dcm2nii

fix: make dcm2nii compatible with node for efficient execution, improve docs