Updated documentation, streamlined the code by removing some unnecessary
variables and condensing some redundant methods. Made "WriteToARFF"
method static in SimpleAPI (was already static in InstancesBuilder)
changed some SimpleAPI Builder methods to be slightly more descriptive.
Minor changes will need to be made to accomodate this in code that
currently calls these functions.
Updated InstancesBuilder to use a Builder methodology for construction
as well. You now have the choice of an empty constructor and building
the IB along the way, using the Builder, or using the copy constructor
More documentation updates