Moved GenomeFitnessPair to new utility package. Updated MuCommaLamda
to reflect this.
Added a static RandomGerator to the utility package. All methods
presently take a range (default 1), but do nothing with it (except
nextInt).
Merge pull request #33 from Athear/utilities

Utility package and classes: Moved GenomeFitnessPair to new utility package. Updated MuCommaLamda to reflect this.
Added a static RandomGerator to the utility package. All methods presently take a range (default 1), but do nothing with it (except nextInt, which takes a range in Java).