[UPDATE] Renamed Graph.java to LosSantos.java

- Fixed the HashMap for the keyWords by switching the values. keyWords are now the keys as opposed to the locations.

- Implemented Dijkstra's Algorithm, or pointToPoint. Not entirely sure if it works, need to actually check if the algorithm works, but logically I think it should.

- Added a minimumDistance function to help find the minimum distance. Used to help Dijkstra's Algorithm.