Seems to work fine.  Needs to be tested further and commented.
Updated UI to remove the option to put another file in.
Updated the way the support threshold is calculated.  The support should
now be given as a decimal value.
Added an inverted lookup table that takes an ItemLists numerical values
and returns the list of items that represent the number.
Also fixed the way it prints the rules to the screen.
Put the sample files in the src directory.
All tests show that this works properly.