Add draft version of smokes sample from Tuffy MLN
Add EvaluationLink TVs
Add equivalence relationship for friends predicate to allow PLN to form bi-directional friendships
Update TVs
Remove redundant rule
Add all the non-friendships
Add term probabilities to person entities
Update syntax
Merge pull request #11 from cosmoharrigan/tuffy

Add PLN representation of "smokes" example from Tuffy MLN