Add -species in the command

[davidmeunier79]

As we are now extending the package to further NHP species (including so macaque, marmoset, baboon and more recently chimpanzee, the number of corresponding params file are increasing; in fact , in extra to template choise, only some nodes are critical for each species (in particular, atlas_brex parameters in ANTS pipelines); most of the other are similar.

The idea would be to keep the -params but makes it optionnal, and add a new -species, with predefined keyword (i.e."macaque", "marmoset", "baboon", "chimpanzee") that would take a default params file, already created (most of them already exists).