Merge pull request #17 from FIRST-4030/vision

Vision
Changed name of calculate to calculateLinearDistance
Renamed DistanceCalculator to LinearDistanceCalculator.
Changed ints to doubles.
Renamed DistanceCalculator to LinearDistanceCalculator
Created a class to compare reports.
Moved DistanceReport to LinearDistanceReport
Comit
Merge branch 'master' of https://github.com/FIRST-4030/2013.git
Merge pull request #19 from FIRST-4030/master

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