Epitope Prediction : New Module Added

New module to filter based on binding affinities and merge results from different allele-length combinates.
Do you have a small test dataset for this new module?  Perhaps that could be the basis for a `.t` test script to accompany this module.  (If it's not data that can be shared publicly it can go in the directory pointed to by `Genome::Utility::Test->data_dir('Genome::Model::Tools::EpitopePrediction::BindingFilter')`)