add cross-system gaming detector from Luc Paquette, Michal Moskal, an…

…d Ryan Baker

Paquette, L., Baker, R. S., Carvalho, A. D., & Ocumpaugh, J. (2015). Cross-System Transfer of Machine Learned and Knowledge Engineered Models of Gaming the System. Lecture Notes in Computer Science User Modeling, Adaptation and Personalization, 183-194. doi:10.1007/978-3-319-20267-9_15