The basics of trilateration seem to work

-Added some new classes to deal with the beacons
-Beacon is essentially a struct to store beacon info (location, calibration stuff)
-BeaconManager actually does the trilateration
-Added the JAMA linear algebra library
-Created unit tests for trilateration
Some more comments
Merge branch 'master' of https://github.com/mastergberry/SmartRover
Merge pull request #2 from sciencectn/master

Trilateration!