Initial commit of completed apriori algorithm.  This algo was written as
part of my CSCE 822 final project to find frequently occurring
combinations of field/value pairings in maintenance record structured
data.  It follows the algorithm as described in Han, Kamber, Pei (2006)
Data Mining: Concepts and Techniques, p. 253.
Merge branch 'master' of https://github.com/wayeast/apriori