Deleted CreateHashMap() class, was only used as start-up for species
hashmap elsewhere.
Merge branch 'master' of https://github.com/ablucher/PGM-IL1.git
Create second hashmap to store reactions and interaction types
Edits to second hashmap
Edited method loadParents() to use Sets instead of ArrayLists
Edited method convertInteractionsToFactor(), factor.setVariables now
adds a list of variables involved in the reaction.