Completed commit r21063.
This is needed for the 'MQ NS CPMG 2-site' model.
This follows the tutorial for adding relaxation dispersion models at: http://wiki.nmr-relax.com/Tutorial_for_adding_relaxation_dispersion_models_to_relax#Creating_a_new_experiment_type.
Authored by: bugman 2013-10-10
Parent: [r21063]
Child: [r21065]