OPT: changed flag -t for -p to specify path of template
OPT: changed flag -t for -p to specify path of template

Former-commit-id: 2cb501c5165adcc5a68d85fe72baae2c7ced62e8
Former-commit-id: 8f547e9ad0de795c45056aa3e2d49fe69381231a
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox